A winter forage tetraploid rye (Secale cereale L.) cultivar, ‘Daegokgreen’, was developed at the Department of Central Area Crop Science, NICS, RDA in 2016. The mutant line ‘CG11003-8-B’, which was induced from rye cultivar ‘Gogu’ (diploid) by colchicine treatment, was selected for its excellent agronomic performance and was placed in preliminary yield trials for one year, 2013. The line was designated “Homil59” and was tested for regional yield trials at the four locations in Korea from 2014 to 2016. Finally, the new cultivar was named as the ‘Daegokgreen’ (grant number 8274). The leaf of cultivar ‘Daegokgreen’ is wide, long and dark-green color. The cultivar also has a big-size grain with light-brown color. The heading date of cultivar ‘Daegokgreen’ was April 17 which was 2 days later than that of check cultivar ‘Gogu’. The tolerance to cold and wet injury, and resistance to powdery mildew and leaf rust of the new cultivar were similar to those of the check cultivar but the resistance to the lodging of the new cultivar was stronger than that of the check. The average roughage fresh and dry matter yield of the new cultivar after 10 days from heading were 37.0 and 7.7 MT ha-1, respectively, which were similar to those (38.4 and 8.0 MT ha-1) of the check cultivar. The roughage quality of ‘Daegokgreen’ was higher in crude protein content (8.9%) than that of the check cultivar (7.9%), while was similar to the check in total digestible nutrients (56.9%). This cultivar is recommended for fall sowing forage crops at all of crop cultivation areas in Korea.
This study was conducted to examine the effects of medium composition on organogenesis towards in-vitro cultured diploid and tetraploid Codonopsis lanceolata and obtain in-vitro mass propagation of superior species of C. lanceolata. Regarding MS medium composition for each concentration, diploid C. lanceolata was found to be declined. However, shoot and adventitious root formation were suppressed with higher mineral salt concentration, and active growth of shootand adventitious root was exhibited as 4.9 cm and 3.2 cm respectively in 1/2 MS medium. While in tetraploid C. lanceolata, it showed 2.9 cm and 3.2 cm respectively in 1/4 MS medium. In the case of sucrose concentration, no consistent decrease was observed for growth of shoot and adventitious root of diploid both at high and low concentration. The growth of shoot (at 3% concentration) and adventitious root (at 7% concentration) was 2.3 cm and 2.0 cm respectively. Although there was no difference in shoot formation of tetraploid C. lanceolata in all concentrations with the range of 1.7 ~ 1.8, there was a slight decrease in shoot growth at high concentration. Results revealed that the adventitious root formation was suppressed at high concentration. Concentration of agar exhibited no significant difference in shoot formation of diploid C. lanceolata at all concentrations. The highest result of adventitious growth (4.1 cm) was observed at 0.8% concentration. Slight inhibition of shoot formation and root formation of tetraploid C. lanceolata was observed at higher concentration. Shoot formation of diploid C. lanceolata also exhibited inhibition at higher concentration. Shoot formation of diploid C. lanceolata was increased at lower pH and shoot growth was the highest (2.3 cm) at pH 3.8. Adventitious root formation was higher at lower pH. Although there was no difference in shoot formation of tetraploid C. lanceolata presenting 1.7 ~ 1.8 regardless of high and low pH, growth inhibition was showed at higher pH. Adventitious root formation and growth showed a little higher result at pH 5.8.
본 연구에서는 중국 북경 옌칭(延慶)으로부터 북한 상원지역에 도입한 1년생 묘목 4배체 아까시나무를 대상으로 식재 입지별로 1년생 묘목의 생장특성을 분석하고, 엽내 3가지 성분의 함량 측정을 통해 향후 식재 후 수확한 엽의 사료첨가제로 이용 가능성을 검토하였다. 그 결과, (1) 상원지역에서 평지에 식재한 4배체 아까시나무는 중국의 옌칭지역 내 4배체 아까시나무에 비해 당년생 맹아지의 길이와 근원경이 50%정도 작게 나타났다. (2) 상원지역의 4개 사면입지에서 4배체 아까시나무의 당년생 맹아지의 길이 생장은 동, 서, 남사면에서 북사면에 비해 23~30% 크게 나타났고, 근원경은 동, 남사면의 4배 아까시나무가 북, 서사면에 비해 14~23% 크게 나타났다. (3) 상원지역에서 4배체 아까시나무의 엽내 조단백질과 조회분 함량은 중국 옌칭지역 내 4배체 아까시나무와 마찬가지로 일반 아까시나무 잎에 비해 40% 이상 높게 나타났다.
효율적인 homozygous 동물을 생산하기 위한 실험의 단계로 염색체가 4배체인 수정란의 이용성을 타진하기 위해 생쥐 수정란과 cytochalasin B를 사용하여 4배체 유도에 관한실험을 수행하였다. 생쥐 2-세포기 수정란을 10/ml 농도의 cytochasin B로 약 20시간 배양하였을 때 모든 수정란은 발육을 거의 멈추었으나, 이 수정란을 cytochalasin B-free medium에 체외배양하였을 때 발육이 재개되어 48시간 후 상실기나
The influence of ploidy level on agronomic characteristics in italian ryegrass, Lolium multiflorum Lam, italicum, was studied using diploids (2x) and tetraploids (4x) on the upland of Livestock Experiment Station, Suweon. The results are summarized as fol
Background: For stable induction of tetraploidy in Fallopia multiflora Haraldson, colchicine was treated to establish the condition of induction and investigated the morphological and cytogenetic traits of the tetraploid plants obtained compared to those of diploid ones.
Methods and Results: For the induction of tetraploidy, F. multiflora plants were soaked in aqueous solutions of colchicine at various concentration (0.1, 0.5, and 1.0%). After this, 2% dimethyl sulfoxide (DMSO) was added at room temperature on a shaker set at 150 rpm for periods of 12, 24, and 48 h. The induction rate of tetraploids appeared to be the highest in plants treated with 0.5% colchicine for 24 h. As the colchicine concentration and soaking time increased above these levels, the growing tip of the roots did not develop and they began to rot. When compared to diploid plants, tetraploids differed greatly in various characteristics, including the sizes and shapes of the leaves, fruits, flowers and roots. The induced tetraploid F. multiflora had larger guard cells, and chloroplasts, increased number of chloroplast in the guard cells and decreased stomatal densities.
Conclusions: When colchicine induced plants for tetraploid, it can be distinguished from diploids, in various characteristics such as morphological changes as stomatal size, number of chloroplasts per guard cell, number of chromosomes and flow cytometry. Therefore, it proved that these methods are suitable, quick and easy methods for the identification of the ploidy level of F. multiflora.
Background : Morus alba L. (M. alba L.) belongs to the family Moraceae and has been industrially used as a food source for the silkworm and as a sedative in traditional medicine due to their adaptogenic, hypotensive, anti-inflammatory, hypoglycemic, and anti-adipogenic properties. In this study, metabolic profiling of diploid and tetraploid in Morus alba L. ‘Cheongil’
Methods and Results : Carotenoids are secondary metabolites found in most of the higher plants. In the current study, the levels of carotenoids were much higher in tetraploid of M. alba L. ‘Cheongil’ than diploid of M. alba L. ‘Cheongil’. Particularly, the levels of lutein, 13z-β-carotene, α-carotene, E-β-carotene, and 9Z-β-carotene were 2.51, 5.53, 7.68, 4.43, and 4,46 times higher in tetraploid of M. alba L. ‘Cheongil’, respectively. Additionally, hierarchical cluster analysis (HCA) was carried out using Pearson’s correlation results in order to determine the relationships between metabolites of diploid and tetraploid in Morus alba L. ‘Cheongil’. The results of HCA revealed the degree of correlation among 42 metabolites, which were identified and quantitated by GC-TOFMS. Among TCA organic acids, succinic acid was positively correlated with fumaric acid (r = 0.8250, p < 0.0001) and malic acid (r = 0.9436, p < 0.0001). Among carbohydrates, fructose was positively correlated with glucose (r = 0.9398, p < 0.0001) and mannose (r = 0.9394, p < 0.0001).
Conclusion : In this study, we investigated primary metabolites and secondary metabolites (carotenoids) in diploid and tetraploid in Morus alba L. ‘Cheongil’ in order to provide information on the difference between
Background : This study was performed to investigate the morphological and growth characteristics and metabolomics approach for the diploid and tetraploid Polygonum multiflorum Thunb (PMT).
Methods and Results : The present study was performed to investigate the effective induction method of tetraploid plants using colchicine treatment. To know the morphological and growth characteristics of PMT overground growing was investigated about the stem diameter, leaf length and width, a scape, inflorescence length, chlorophyll, seed length and seed width. Metabolite profiles from P. multiflorum were analyzed by an ultra performance liquid chromatography–quadrupole - time of flight (UPLC-Q-TOF) mass spectrometry (MS). The number of stomata and chlorophyll content was also higher in tetraploid. However, the physiological and morphological characteristics of the newly developed tetraploid showed noticeable results compared to the diploid plant. Also, the inherent characteristics of a newly acquired tetraploid also exhibited better results compared to diploid. Twenty one compounds including catechins from leaf and thirty compounds including stilbenes from roots were identified as major metabolites of PMT. The levels of most root metabolites except dethiobiotin, epigallocatechin gallate, procyanidin B1, epiafzelechin 3-O-gallate, and moupinamide from PMT were higher than those of diploid. The levels of 2,3-digalloylglucose, fallacinol, tricin, physcion-8-O-β-D-glucoside, torachrysone-8-O-β-D-glucopyranoside, questin, aloe-emodin 8-O-(6′-O-acetyl)-glucoside, polydatin, 2,5-dimethyl-7-hydroxychromone, 3,5,4'-trihydroxystilbene, aloe-emodin, myrciacitrin II and ω-hydroxyemodin from teraploid PMT were 342, 32, 31, 21, 11, 11, 9, 8, 6, 5, 4, and 2 times, respectively, higher.
Conclusion : From above results, overground growing of tetraploid P. multiflorum is fairly better than that of native P. multiflorum.
Background : Tetraploid plants are bigger in the size of fruits, leaves, stems, and roots than diploid plants due to bigger cells attributed to chromosome multiplication. The advantage of tetraploid plants includes breakdown of self-incompatibility and increase of disease resistance. This study was carried out to gain tetraploid resources for breeding of new boxthorn varieties having pest resistance, higher yield, and self-compatibility. Methods and Results : Tetraploid lines and maternal varieties used in this study were C0148-10 and C0412-1 from Cheongyang-jaerae, M0148-94 and M0148-120 from Myongan, B0148-43 and B0148-78 from Bulro, D0148-62 and D0148-72 from Cheongdae, and Y0148-2 and Y0148-24 from Youngha. For organic acid composition of tetraploid lines and matrenal varieties, malic acid was highest as 1.47 – 4.6 ㎎/g in fruit, and citric acid and succinic acid were highest in leaf as 2.67 – 4.08 ㎎/g and 4.28 – 6.00 ㎎/g. Total organic acid content in root ranged from 1.78 to 3.23 ㎎/g, lower than in fruit and leaf. Of 11 fatty acids composing the boxthorn fruit, linoleic acid was highest as 25.36 – 50.33 ㎎/g. For leaf, linolenic acid was highest as 4.39 – 8.77 ㎎/g. Linoleic acid was highest as 1.65 – 6.98 ㎎/g of all fatty acids in root. 19 free amino acids were analyzed. Average content of essential amino acids in fruit was 6.64% and lysine was highest as 1.57%. Non-essential amino acid content was 8.26% and serine was highest as 2.72% of all non-essential amino acids in fruit. D0148-62 was highest in the total amino acid and the essential amino acid as 23.58% and 10.19%, respectively. Total amino acid content in leaf was 26.49%. Essential amino acid was 12.12% and leucine was highest as 2.08%. Non-essential amino acid was 14.37% and serine was highest as 4.61%. Total amino acid content in root was 13.25%. Essential amino acid was 6.66% and arginine was highest as 2.58%. Non-essential amino acid was 6.59% and serine was highest as 2.60%. Conclusion : Organic acid content increased in fruit of tetraploid lines and lines induced from Cheongyang-jaerae, Myongan, and Cheongdae were higher in contents of linoleic acid, oleic acid and palmitic acid, resulted in total fatty acid increasing. This shows several induced tetraploid boxthorn lines are very useful resources in breeding new varieties.
Background : Tetraploid plants are bigger in the size of fruits, leaves, stems, and roots than diploid plants due to bigger cells attributed to chromosome multiplication. The advantage of tetraploid plants includes breakdown of self-incompatibility and increase of disease resistance. This study was carried out to gain tetraploid resources for breeding of new boxthorn varieties having pest resistance, higher yield, and self-compatibility. Methods and Results : Tetraploid lines and maternal varieties used in this study were C0148-10 and C0412-1 from Cheongyang-jaerae, M0148-94 and M0148-120 from Myongan, B0148-43 and B0148-78 from Bulro, D0148-62 and D0148-72 from Cheongdae, and Y0148-2 and Y0148-24 from Youngha. Betaine content was highest as 0.7 - 1.62% in leaf, followed by 0.55 - 1.17% in fruit and 0.04 - 0.23% in root. Betaine content in plant parts of several tetraploid lines increased compared to martenal varieties, higher in fruit for 5 lines including D0148-72, B0148-78, and C0142-1, higher in leaf for 5 lines including C0148-10, C0412-1, and M0148-94, and higher in root for 7 lines including Y0148-2, M0148-94, and M0148-120. Rutin content in leaf ranged 4.0 – 388.55 ㎎% and was highest as 388.55 ㎎% in Y0148-24. Tannin content in leaf of tetraploid lines was 4.70 - 6.12%, highest as 6.12% in Y0148-2 and M0148-120, similar to the maternal varieties. Youngha of the diploid plants showed the highest tannin content of 7.08%. Total free sugar content in tetraploid lines was higher as 8.53 - 12.53% than maternal varieties. Conclusion : Betaine and rutin contents increased in several tetraploid lines and Total free sugar content in tetraploid lines was higher as 8.53 - 12.53% than maternal varieties. This shows tetraploid boxthorn lines are very useful resources in breeding new varieties.
Background : As the farmers who grow Chinese matrimony vine (Lycium chinense Miller) in rain-shelter greenhouses increase, it is necessary to develop a cultivar with self-compatibility and high quality. Methods and Results : The new boxthorn line, CBP06419-243 was selected from the cross between CBP03310-250(IT232705) and CBP05399-1 to breed the cultivar with self-compatibility and high quality. These lines used for crossing was tetradilpoid induced by the colchicine treatment on bud. Its preliminary yield test was performed from 2009 to 2011 and the selected line was named Cheongyang 18. Its regional yield trials were carried out in Cheongyang, Yesan and Jindo from 2012, 2014, 2015 and Cheongyang 18 was registered as the new variety, Whasu, in 2015. The specific characteristics were summarized as follows; Tree shape is semi-open type and the leaf is lanceolate. The flowers are distinctly larger. The fruit type is medium size, long oblong and yellowish red. The flowering was June 21 with medium flowering. Branching by pruning its sprout was generated less than the check variety, Cheongmeong. The infection rates on leaves to Eriophys macrodonis Keifer was as strong as 7.7 percent. Anthracnose on fruits in open field was slightly severe compared to the check variety, but the infection rates in rain shelter greenhouses was similar. The content of betaine and free sugar in dried-fruits were higher than that of the check. The dried-fruit yield was decreased about 13 percent in open field, but increased 18 percent in rain shelter greenhouses. Conclusion : This variety ‘Whasu’ was suitable for cultivation in plastic film greenhouses because of self-compatibility and high-yielding. It is not necessary the companion variety.
Background : Tetraploid plants are bigger in the size of fruits, leaves, stems, and roots than diploid plants due to bigger cells attributed to chromosome multiplication. The advantage of tetraploid plants includes breakdown of self-incompatibility and increase of disease resistance. This study was carried out to gain tetraploid resources for breeding of new boxthorn varieties having pest resistance, higher yield, and self-compatibility. Methods and Results : Tetraploid lines for this study were C0148-10 and C0412-1 from Cheongyang-jaerae (CJ), M0148-94 and M0148-120 from Myongan (MA), B0148-43 and B0148-78 from Bulro (BL), D0148-62 and D0148-72 from Cheongdae (CD), and Y0148-2 and Y0148-24 from Youngha (YH). Flower width ranged 13.2~17.4mm. Flower, pollen and anther were bigger than the mother plants. Pollen germination rate of the tetraploid lines ranging 36.1~58.8% was lower than mother plants (46.5~67.6%). Self-fertilization rate in 4 varieties, MA, BL, CD and YH was low as 1.3%, 4.0%, 1.4% and 4.7% respectively indicating that mother plants are self-incompatible. Self-fertilization rate in tetraploid lines was higher as 58.1~87.5% and B0148-43, M0148-120, and D0148-72 showed the highest self-fertilization rate over 80%. Conclusion : Tetraploid lines showed higer self-fertilization rate than mother plants that they were expected as valuable resources for new boxthorn variety having self-compatibility.
Background : Tetraploid plants are bigger in the size of fruits, leaves, stems, and roots than diploid plants due to bigger cells attributed to chromosome multiplication. The advantage of tetraploid plants includes breakdown of self-incompatibility and increase of disease resistance. This study was carried out to gain tetraploid resources for breeding of new boxthorn varieties having pest resistance, higher yield, and self-compatibility. Methods and Results : 10 Tetraploid lines by colchicine treatment were compared with diploid boxthorn varieties on growth and yield characteristics. Tetraploid lines induced from each varieties were C0148-10 and C0412-1 from Cheongyang-jaerae (CJ), M0148-94 and M0148-120 from Myongan (MA), B0148-43 and B0148-78 from Bulro (BL), D0148-62 and D0148-72 from Cheongdae (CD), and Y0148-2 and Y0148-24 from Youngha (YH). The ratio of stem diameter to stem length in tetraploid lines increased to 0.86 - 1.16 compared to 0.79 - 0.87 of the mother plants whereas number of branches decreased. The ratio of leaf length to width ranged from 2.0 to 3.3, lower than the mother plants. Leaf weight and chlorophyll content also increased compared to the mother plants. C0148-10, C0412-1, Y0148-2, and Y0148-24 showed 34~346% increase in dry fruit yield per 10a compared to mother plants. Conclusion : Above selected tetraploid lines had larger and heavier leaves and C0148-10, C0412-1, Y0148-2, and Y0148-24 were higher in fruit yield than mother plants that the selected tetraploid lines were expected as useful resources for new leaf vegetable and higher yield boxthorn varieties.
Background : This study was performed to investigate the morphological and growth characteristics of tetraploid Polygonum multiflorum L. with colchicine treatment, and to clarify its effective induction and time for the increase of rhizome hypertrophy and effective components. Methods and Results : The induction of tetraploid P. multiflorum were done with colchicine treatment of 0.1, 0.5, and 1.0% conc. and the time was treated with 12, 24, and 48 hrs, respectively. DMSO 1% is treated for the effective penetration of colchicine with constant-temperature oven at 24C. Leaf explant was added the HR-A solution stained with HR-B solution, and then determined whether DNA contents of the doubles or not. Seed stand rate showed lower tendency as higher treatment concentration and as delayed the treatment time. When treated in DMSO 1% with 48 hr, seed stand was so small rate with 2%, and treated in 0.5% with 12 hr, seed stand was recorded higher rate with 33%. When treated in 0.5% colchicine with 24 hr, chimera and tetraploid induction rates were highest and obtained 29 individual chimera and 5 individual tetraploid. On overground growing, mean stem diameter of tetraploid (11.3 ㎜) is two times thicker than that of diploid (6.4 ㎜), with the vigorous growth. leaf length and width of tetraploid was 9.1 and 6.2 ㎝, respectively, and that of diploid was 6.8, and 5.1 ㎝, respectively. Stem diameter of a scape was also more thicker tendency in tetraploid than in diploid, chlorophyll contents over 29% existed in tetraploid. Investigated result from stoma no. and size of leaf with 400 magnification, stoma no. of diploid (26 individual) was four times higher than that of tetraploid (7 individuals), the size of tetraploid (38 ㎛) is twice longer in size of diploid (18 ㎛) and stoma area are broaden in four times. Seed length of tetraploid (3 ㎜) is longer than that of diploid (22 ㎜); but, seed width of tetraploid (22 ㎜) is widen than that of diploid (14 ㎜) in seed size comparison. That is, seed length is bigger in 1.4 times and seed width is bigger in 1.6 times, and seed surface area is broaden in two times. Conclusion : From above results, overground growing of tetraploid P. multiflorum is fairly better than that of native P. multiflorum. In the future, this tetraploid variety will promote to register when recognize the excellence than native species after tested the disease tolerance, underground growing characteristics, and key index component.
Background : Tetraploid plant is bigger in size of organs like leaf, stem, fruit, and root than diploid plant by chromosome doubling. Also, Self-ìncompatibílity disappeares and disease resistance is strengthened in tetraploid plant. To breed new boxthorn variety having bigger fruit, higher yield, pest tolerance, and, self-compatibílity, tetraploids was induced for tetraploid breeding resources by colchicine treatment in each boxthorn variety. Materials and Methods : Colchicine was treated in Myongan, Cheongdae, Bulro, and Youngha for 0.1% concentration and 48 hours. Polyploid was identified by flow cytomertry(Partec, PA-1) and chromosome numbers of polyploid individuals were examined by aceto-carmine stain. Conclusion : Colchicine was treated in Myongan, Cheongdae, Bulro, and Youngha for 0.1% concentration and 48 hours. Tetraploid was induced as 13, 9, 6, and 5 individuals in Myongan, Cheongdae, Bulro, and Youngha respectively by above colchicine treatment.
To produce high quality watermelon, three tetraploid watermelon breeding lines (‘SA03-1’, ‘SA06-1’ and ‘SB01-1’) were developed by treatment with different chromosome doubling reagents. To identify the optimal tetraploid inductive conditions, the three watermelon breeding lines were selected by counting the number of doubled chloroplasts in guard cells. Tetraploid induction rates differed depending on the genotypes and treatment with doubling reagents. However, the highest induction rate occurred with 1.0% colchicine (82.2%). These putative tetraploid lines were re-confirmed for ploidy using flow cytometric analysis and chromosome counting. The internode length of the tetraploid breeding lines was different when the leaf size was larger in all three tetraploid lines compared to their diploids. The fruit weight of the tetraploid fruits for ‘SA03-1’ and ‘SB01-1’ was lower than for their diploid, and the rind thickness and total sugar content (°Brix) of tetraploid SB01-1 were significantly different from those of its diploid. Tetraploid lines were sterile, yielded a lower number of seeds per fruit for ‘SA03-1’ (21), ‘SA06-1’ (62), and ‘SB01-1’ (34.7), and the seeds were larger and thicker than those of their diploids. These tetraploid breeding results will be useful for breeding new seedless watermelon cultivars.
The roots of Platycodon grandiflorum species either dried or fresh, are used as an ingredient in salads and traditional cuisine in Korea. To interpret the root proteins, a systematical and targeting analysis were carried out from diploid and tetraploid roots. Two dimensional gels stained with CBB, a total of 39 differential expressed proteins were identified from the diploid root under in vivo condition using image analysis by Progenesis Same Spot software. Out of total differential expressed spots, 39 differential expressed protein spots (≥ 1.5-fold) were analyzed using LTQ-FTICR mass spectrometry. Except two proteins, the rest of the identified proteins were confirmed as down-regulated such as Isocitrate dehydrogenase, Proteasome subunit alpha type-2-B. However, the most of the identified proteins from the explants were mainly associated with the oxidoreductase activity, nucleic acid binding, transferase activity and catalytic activity. The exclusive protein profile may provide insight clues for better understanding the characteristics of proteins and metabolic activity in various explants of the economically important medicinal plant Platycodon grandiflorum.