본 연구는 제주도에 있어서 인산 시용량 차이가 (0,4,8,16,32kg/10a) 사료용 청예동부의 수량 등 형질변화에 미치는 영향을 구명하기 위하여 수행하였으며, 그 결과는 다음과 같다. 1. 초장, 생초중,경중, 엽중, 엽수, 주경절수, 1차분지수,협수. 협중 등은 조사시기에 관계없이 인산시비량이 증가할수록 증가되었다. 2. 초장 및 주엽절수는 8월 25일 이후 증가가 없었고 경중 및 생체중은 시비량에 관계없이 8월 25일 (파종후 60일)에 가장

The agronomic performance of four introduced corn(Zea mays L.) hybrids and a domestic hybrid Suwon 19(control) was compared for silage production in the Middle Northwestern Coast(MNWC). Middle Southwestern Coast(MSWC) and Middle Northern Inland(MN1) regio

본 시험은 봄 연맥(Avena sativa L.)에 대한 파종량및 질소시비수준이 생육특성, 사료가치 및 사초의 수량에 미치는 영향을 알아보고자 1987년 9월부터 11월 까지 약 2개월간에 걸쳐서 수행되었으며 그 결과를 요약하면 다음과 같다. 1. 출현솔은 파종량이 ha당 120,160 및 200kg으로 증가함에 따라서 93.4, 71.4 및 70.6%로 낮아졌다(P<0.01) 2. 분벽솔 발생은 파종량의 증가에 대하여 유의적인 감소가인정되어(P<0.0

This study was conducted to determine the effects of cutting frequency and cutting height on agronomic characteristics and yield performance of sorghum-sudangrass hybrid, cv. Pioneer 855 F on the experimental field of Livestock Experiment Station, Suweon.

This study was carried out to investigate the relationships and the variations of agronomic characteristics in the shoot and root part of grasses for the basic data of the development, the management and the utilization of pasture in the forest. This stud

사일리지 옥수수의 적정(滴定) 질소시비(窒素施肥) 수준(水準)과 재식밀도(栽植密度)를 알아보고자 1981년(年) 부터 1982년(年) 까지 축산시험장(畜産試驗場) 사료포(飼料圃)에서 단교잡종(單交雜種) 수원(水原) 19호(號)를 가지고 시험(試驗)한 결과(結果)는 아래와 같다. 1. 질소(窒素)를 증시(增施)하면 웅수출현기(雄穗出現期)와 간장(稈長)은 뚜렷한 변화가 없었으나 착수고(着穗高)는 다소 낮아지고 경(莖)의 직경(直徑)은 굵어지며 엽면적지수(葉

우리나라에서 널리 이용(利用), 재배(栽培)되고 있는 옥수수와 도입(導入) 옥수수의 silage재료(材料)로서의 생산성(生産性)과 영양적(營養的) 가치(價値)를 구명(究明)하고자 품질별(品質別) 특성(特性) 및 생산성(生産性)과 TDN 함량(含量) 및 생산량(生産量)을 조사분석(調査分析)하여 평가(平價)한 바를 요약(要約)하면 다음과 같다. 1. 수원19호는 초장(草長) 및 간장(稈長)에서 각각(各各) 290.0cm, 258.5cm로 가장 우수하였으며,

사료용(飼料用)수수의 품종개량(品種改良)을 목적(目的)으로 미국(美國)으로부터 도입(導入)한 22품종(品種)의 웅성불임계통(雄性不稔系統)과 58품종(品種)의 자식계통(自殖系統)을 1978년(年) pot 재배(栽培)하였고 80품종(品種)의 재래종(在來種)은 동년(同年) 포장(圃場)에 재배(栽培)하여 조사(調査)한 각(各) 품종(品種)들의 특성(特性)을 요약(要約)하면 다음과 같다. 1. 각군(各群) 모두 7월(月)22~26일(日) 사이에 출수

소맥(小麥) 집단(集團)에 있어서 조숙(早熟) 다수성(多收性) 계통(系統)의 효율적(效率的)인 선발(選拔)에 관(關)한 기초자료(基礎資料)를 얻고자 중숙(中熟)조숙(早熟)(올밀/새밀), 만숙중숙(中熟)(Naphal/청계밀) 두 조합(組合)을 공시(供試)하여 집단(集團)의 유전적(遺傳的) 변이(變異)를 조사(調査)하고 경로분석(徑路分析)을 한바 얻어진 결과(結果)는 다음과 같다. 유전변이계수(遺傳變異係數)는 올밀새밀 조합(組合)에서는 수획지수(收獲指數), 립수(粒數), 수량(收量), 간장(稈長)의 순(順)으로, Naphal청계밀 조합(組合)에서는 수획지수(收獲指數), 간장(稈長), 1,000 립중(粒重)의 순(順)으로 높았다. 유전력(遺傳力)(협의(狹意))은 양조합(兩組合)에서 출수기(出穗期), 성숙기(成熟期), 간장(稈長), 수획지수(收獲指數)가 높았고(0.525~0.808) 립수(粒數), 수량(收量)은 낮았다. 유전획득량(遺傳獲得量)(%)은 출수기(出穗期), 성숙기(成熟期)가 양조합(兩組合)에서 모두 높았고 수량(收量)은 낮았다. 1,000립중(粒重)의 유전획득량(遺傳獲得量)(%)은 Naphal청계밀 조합(組合)에서는 높게 나타났다. 수량(收量)과 수수(穗數) 및 립수(粒數)와는 높은 정(正)의 유의상관(有意相關)을 보였고 수량(收量)에 대(對)한 직접효과(直接效果)는 수수(穗數)가 가장 컸고 다음은 립수(粒數)였다.

Background: Astragalus membranaceus belonging to the Leguminosae family is often utilized as a traditional medicine. The aim of this study was to elucidate the basic breeding information required to develop short stem A. membranaceus cultivars. Methods and Results: Roots of A. membranaceus advanced yield trial (AYT) lines were harvested in late October 2017. Root yield of six AYT lines were increased in a range of 8.9 - 74.8% compared with ‘Aseong’ as control (check variety). The height of seven AYT lines were shorter than that of ‘Aseong’. In addition, stem diameter of nine AYT lines was thicker than that of ‘Aseong’. Consequently, 1502-56, 1503-90, and 1510-80 were selected as elite lines for the development of short stem cultivars. HPLC analysis was perfromed to identify lines with high level active components such as calycosin-7-O-β-D-glucoside and calycosin. The levels of both active components were higher in 1502-56, and 1503-90, but not in 1510-80 compared to ‘Aseong’. In addition, 2,2-Diphenyl- 1-picryl hydrazyl (DPPH) radical scavenging activity was higher in the 1502-56 compared to ‘Aseong’. Considering these results, two AYT lines, 1502-56 and 1503-90 were selected as short stem lines with high calycosin-7-O-β-D-glucoside and calycosin content. Conclusions: Taken together, Two short stem lines were identified in this study. In our future study, regional yield trial (RYT) will be conducted using these selected lines to develop new cultivars.

Background : The purpose of this study is to select potential genetic resources from safflower germplasm collected from India based on their oil compositions and agronomic characteristics. Methods and Results : The agronomic characteristics were measured during the growing period of the safflower. Total oil contents were recovered by Soxhlet extraction and the fatty acid compositions were analyzed by using gas chromatography. The mean of plant height, leaf length and leaf width were 100.19 ㎝, 20.49 ㎝, and 7.29 ㎝, respectively. The percentage of leaf margin with serration was 95%, and 2% of the total resources didn’t have spines on the involucral bract. K185681 had no spines on the involucral bract and the plant height was the smallest. 73% of the flower of safflower was yellow. 68% of safflower germplasm changed flower color from yellow to red. Total oil contents of 267 safflower accessions showed a significant variability among the entire domain of collections and ranged from 5.81 to 38.91%. Palmitic and stearic acid were ranged from 4.98 to 6.65%, and 1.82 to 2.73%, respectively. Oleic and linoleic acid showed a wide variation which ranged from 10.53 to 22.27%, and 69.46 to 81.26%, respectively. Linolenic acid was ranged from 0.06 to 0.13%. K185639 and K185639 had the highest total oil contents and linoleic acid, respectively. Cluster analysis based on oil composition and agronomic characteristics data divided the germplasm collections into three groups. Group Ⅲ having 114 accessions contained accessions with taller plant height than the other groups. Group Ⅱ having 68 accessions, the main color of flower was white but the other groups were yellow. Oleic acid showed a strong negative correlation (r = -0.9691**) with linoleic acid. Principal component analysis (PCA) based on the oil compositions and agronomic characteristics data revealed that the first two principal components (PC1 and PC2) together explained 36.28% total variation. Conclusion : These results showed that K185681, K185639 and K185639 could be useful to develop breeding and functional food.

A total of 447 accessions consisting of seven Brassica spp.; Brassica carinata (34), B. juncea (199), B. rapa subsp. dichotoma (18), B. rapa. subsp. oleifera (14), B. rapa subsp. rapa (36), B. rapa subsp. trilocularis (56) and B. alba subsp. alba (90) were studied for their morphological characters and fatty acid compositions. There was a wide variation for morphological traits, oil content and fatty acid composition among Brassica species. Seed number/silique and yield/plant were varied from 4.2 (B. alba) to 25.1 (B. rapa subsp. trilocularis) and from 170.7 g (B. rapa subsp. oleifera) to 351.9 g (B. juncea L. Czern.), respectively. Among Brassica species, B. rapa subsp. trilocularis exhibited the highest oil (29.2%), stearic (20.4%) and erucic acid (45.3%) content. B. carinata had the highest content of palmitic (5.2%), oleic (21.2%) and linolenic acid (11.1%). B. rapa subsp. dichotoma and B. rapa subsp. oleifera exhibited the highest content of linoleic (8.1%) and behenic (26.9%) acid, respectively. B. rapa subsp. trilocularis exhibited the highest (45.3%) erucic acid content and significant positive relationship was observed between oleic acid and linoleic acid. This variation of agronomic and fatty acid compositions in Brassica species can be utilized to develop new varieties.

Soybean [Glycine max (L.) Merr.] seed is an important dietary source of protein, oil, carbohydrates, isoflavones, and other nutrients for humans and animals. Raffinose and stachyose are the main antinutritional factors in soybean seed. They are carbohydrates belonging to the raffinose family of oligosaccharides, which are not readily digested in humans and cause flatulence or diarrhea. The genetic reduction of the raffinose and stachyose contents in mature soybean seeds will improve the nutritional value of soybean. The objective of this research was to evaluate agronomic traits with 10 F6 strains selected from breeding populations derived from a cross among seven parents. The contents of raffinose and stachyose in mature seeds were detected by high-performance liquid chromatography. Agronomic traits such as flower color, flowering date, harvesting date, lodging, plant height, seed coat color, hilum color, 100 seed weight, and yield were evaluated. Ten intermediate parents showed low raffinose and stachyose contents. The intermediate parent 883-1 had a small seed size, six intermediate parents (15A1, 15D1, RS-5, RS-33, RS-64, and RS-70) had a medium seed size, and two intermediate parents (14G20 and RS-21) had a large seed size. The intermediate parent RS-21 had a black seed coat and a green cotyledon. Four intermediate parents (883-1, 14G20, RS-5, and RS-21) had elite agronomic traits. The new intermediate parents developed through this study will be used to develop improved soybean cultivars with low contents of raffinose and stachyose.

Background : Panax ginseng C.A. Meyer is a representative medicinal plants and it has been used in traditional medicine because the plant have many effective component such as saponins. To obtain a wild-cultivated ginseng (WCG) which is similar to wild ginseng (WG), this method usually performed in a mountain using seeds or seedlings of cultivated ginseng (CG) and WG. WCG is very expensive because it is difficult to cultivate. However, systematic cultivation method have not been developed compared to their high added value. Furthermore, very high price of WCG caused the problem that Panax notoginseng or Panax quinquefolium are sold as WCG in Korean market. This is concerned as a serious problem to consumers. In this study, we analyzed the agronomic and growth characteristics of the WCG cultivated in Korea. Methods and Results : We examined the WCG that was collected and sold by regional groups at the Korean market. The root age, growth conditions, and quality level of the cultivated WCG were confirmed. WCG samples were collected from five areas in Korea (Bucheon, Cheongju, Hoengseong, Judeok and Ulsan). The main root diameter, root shape index, rhizome length, and root weight showed high level of variation and they did not form annual rings. Conclusion : Agronomic and growth characteristics of WCG showed high variations according to cultivating regions.

This study was carried out to identify the optimum seeding dates for selecting a double-cropping system and to assess the effect of polyethylene film mulching on the yield of Proso millet. Seeds of the varieties Hwanggeumgijang and Ibaegchal were sown in Miryang on five different dates: 1st (May 25), 2nd (June 15), 3rd (June 25), 4th (July 5), and 5th (July 15), with and without polyvinyl mulching. The varieties have different characteristics, for example, Hwanggeumgijang is an early-maturing type and more sensitive to temperature, whereas Ibaegchal is a medium-maturing type and more sensitive to the duration for which it is exposed to sunlight. Late-sown Hwanggeumgijang had a short heading date from seeding and required a low accumulated temperature. It also had a shorter period of heading, a shorter culm length and a shorter diameter of stem. In contrast, it had had a higher number of ears per m2 although similar ear length and similar 1000-grain weight. The yield potential of Hwanggeumgijang was found to decrease at a late seeding date. In particular, it significantly decreased at the seeding date of July 15. In the case of cultivation with polyvinyl mulching, the period of heading was shorter by 2–4 days and the yield potential was increased by approximately 12–32%. The length and diameter of culm in Ibaegchal were slowly decreased, but the length of ear, the 1000-grain weight and the yield potential were similar for all seeding dates (except July 15) and cultivation with and without mulching. When sown late, the length and diameter of the culm of Ibaegchal very rapidly decreased by the July 15 seeding date. The protein content of Ibaegchal was higher but the amlyose content of Ibaechal was lower compared to Hwanggeumgijang. At late seeding dates, the protein contents of the two varieties increased but the amylose contents were similar.

Background: Sorghum is a major cereal food crop used in many parts of the world. It has been grown on a subsistence level by farmers, under various conditions of environmental stresses in the semi-arid tropics of Africa and Asia. This plant has received significant attention because of its ability to reduce cholesterol in the blood, and its anti-dementia, antioxidant, and antimicrobial properties. It is possible to develop a functional and commercially viable sorghum variety by using superior cultivars of sorghum. The objective of this study was to build a database of superior sorghum accession.Methods and Results: We used 250 sorghum accessions collected from different geographical bioregions in Korea. We determined various agronomic characters including germination rate and ear length of these accessions. To determine the antioxidant capacity, we measured the 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity, 2,2’-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid)-diammonium salt radical scavenging activity, total phenolic contents, and total flavonoid contents. Accession 189 showed higher germination (> 80%) than the other accessions. Higher 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity was observed in 11-SB-078 (RC50; 1.89 ± 2.88 μg/ml), and higher 2,2’-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid)-diammonium salt radical scavenging activity was recorded in 11-SB-116 (RC50; 35.48 ± 2.42 μg/ml) than in the other accessions. The ear length ranged from 15 ㎝ to 48 ㎝, the total phenolic contents ranged from 3 ㎎• GAE/g to 77 ㎎• GAE/g, and total flavonoid contents ranged from 0.09 ㎎• QE/g to 1.07 ㎎• QE/g.Conclusions: Among 250 sorghum accessions, we selected 10 with both superior agronomic characters and highly functional food quality.

Background : This study was carried out to distribute superior cultivars to farmers by analyzing growth characteristics of ginseng and effectively set the target for breeding by investigating annual agronomic characteristics of ginseng. Methods and Results : As a plant materials, Chunpoong (CP), Yunpoong (YP), Gopoong(GP), Gumpoong (GU) and Sunun (SU) were transplanted in Eumseong (ES), Geumsan (GS) and Yeoncheon (YC) on March 2013. Cultivation and management were conducted on the basis of the standard guidelines. According to stem and petiole by region, YC represent the largest stem diameter, leaf length and petiole length of cultivars, followed by those in ES and those in GS. Leaf growth of cultivars was overall the best in YC. Although CP had long and narrow leaves in all regions, YP and SU had short and narrow leaves. Root weight of all cultivars was the best in YC, but there was no significant differences by them. Growth of CP, YP and GP was generally good in ES. Growth of cultivars was relatively even in GS, but it was poor compared to cultivars which were cultivated in ES and YC. Conclusion : There were considerable differences in root growth of cultivars. However, this results suggest that CP of 4-year-old is produced stably in some regions because it had a small coefficient of variation.