국내 벼 유전자원의 다양성 확보와 유럽 벼를 국내 육종소재 로 활용 가능성을 검토하기 위하여 유럽의 벼 품종등록 현황을 알아보고 국내에서 재배하면서 주요 농업특성을 조사한 바, 1. EU에 등록 중인 벼는 378 품종으로 이태리와 스페인이 전체 등록품종의 약 88%를 차지하였다. EU는 연 평균 약 20 품종 이상의 신품종이 지속적으로 등록되고 있었으며 주된 등 록 회사는 Lugano Leonardo, Ente Nazionale Risi 등이었다. 2. 최근 재배면적이 확대되고 있는 Imidazolinone 계열의 제 초제저항성 벼 Clearfield® 등록현황을 보면 2009년 이후 모두 34품종이 등록되었으며 연평균 등록 품종수는 3.8 품종이었다. 3. ‘Mare’ 등 유럽 벼 49품종을 국내에서 재배하면서 간장, 출수기 등 주요 농업형질을 조사한 바, 간장은 평균 87.8 cm, 수장은 19.1 cm로 국내 품종보다 다소 크거나 비슷하였다. 주 당수수는 7.4개로 국내 품종보다 적었으며 출수기는 평균 7월 30일로 국내 조생종보다 빠르거나 비슷하였다. 4. 간장은 이태리 품종인 ‘Ronaldo’가 59.4 cm로 가장 짧았 으며 수장은 “Loto”가 28.6 cm로 가장 길었다. 천립중은 평균 27.6 g으로 국내 품종보다 약 5 g 정도 많은 중대립이었고 ‘Kipinar’가 38.2 g으로 가장 높았다. 미립의 아밀로스 함량은 19.1~16.1%의 범위를 보였으며 현미 중 단백질 함량은 평균 8.6%로 국내 품종과 비슷하였다. 5. 이상에서 보면 EU는 재배면적에 비하여 벼 관련 연구와 품종개발이 매우 활발하게 이루지고 있으며 육성 품종의 주요 작물학적 특성도 국내 품종과 비슷하여 국내 육종에 활용이 가능할 것으로 판단된다.
Economic traits are quantitative traits and are mostly controlled by a large number of genes. Some these genes tend to have a large effect on quantitative traits in cattle and are known as major genes primarily located at quantitative traits loci (QTL). However, in practice, QTL is linked to allele associates of the gene controlling traits of interest. It is hypothesized that if QTL explaining a part of genetic differences between animals are detected, the effect of the genes located at QTL could assist in estimating an animal’s true genetic value. Therefore, QTL information could probably provides accuracy of breeding value estimation as well as more genetic gain through selection of animals at relatively younger age. Marker assisted selection (MAS) is the indirect selection process where a quantitative trait of economic importance is selected not just based on the trait itself but also on the basis of marker linked to QTL. MAS could be useful for traits that are difficult to measure, exhibit low heritability, and are expressed late in development. Major genes which are responsible for QTL could possibly be identified first by using different techniques such as gene expression analysis and QTL mapping. Thereafter, the information generated could be implemented for MAS in estimating breeding value. In this review we focused on delivering genome information into Hanwoo breeding program.
In Africa, rice is the fastest demanding staple food with a high growth rate of consumption at 4.5% per annum. Currently Africa occupies 32% of world rice imports, and pressure on rice is expected to rise in the near future. Faced with this deficit, Korea has launched the rice breeding project through Korea-Africa Food & Agriculture Cooperation Initiative (KAFACI) of which goal is to increase rice productivity through accelerated development of improved germplasm and varieties in Africa. As of 2013, the ten African member countries joined the rice breeding projects of KAFACI program; they are Cameroon, DR Congo, Ghana, Kenya, Malawi, Mali, Nigeria, Sudan, Tanzania, and Uganda. We adopted the breeding strategy of intervarietal cross and anther culture to speed up high-yielding secondary populations using the Korean and African germplasm. Korean germplasm is composed of 1) temperate japonicas adaptable to tropical conditions of short-day length and high temperature 2) wide-cross derivatives from African wild species, O.glaberrima and O,longistaminata, and 3) tongil-type varieties. These germplasm is evaluated for adaptability in Africa and African partners make crosses with local germplasm with the best selections. Korea produce double-haploid populations from these crosses for another cycle of selection for high-yielding lines in Africa. Inter-varietal crosses and double-haploid technology could accelerate the development of high-yielding germplasm and new rice varieties in Africa within short project period.
Seed storage proteins of different solubility were extracted and denatured subunits of each protein were evaluated with malting barley quality parameters. Its been known that each subunit of seed storage protein encoded by each gene and subunit profiles were highly related to end-use quality in cereals. The purpose of this study is to provide selection criteria for high quality malting barleys with aid of bichemical-genetic information. Total 13 regional test lines and three locations (Naju, Jinju, and Jeju) were incorporated in this study. Albumin and hordein were extracted, denatured, and separated in 12% SDS-PAGE. Presence and absence of subunits of each protein were scored. Dendrogram (using XLSTAT program) was constructed to evaluated the relatedness of lines. The correlation between band profiles and quality test were assessed through Agglomerative Hierarchical Clustering (AHC) for statistics analysis. Hordein subunits can be classified into four groups, A, B, C, and D group. In general, hordein fractions contribute higher than albumine to determine malting quality. Specific molecular weight ranges (97.4-31.0, 66.2-31.0, and 45.0-31.0 kDa) of subunits were highly correlated with malting barley quality parameters. The subunit information would be directly incorporated in providing selection criteria for high quality malting barley in the malting barley breeding program.
The experiment was conducted to improve the selection efficiency m the first generation through the analysis of variation pattems of major tuber characteristics when raising hybrid seedling using the different plug cell size. The correlations in related t