한국작물학회지 (KOREAN JOURNAL OF CROP SCIENCE)
- 제30권1호
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- Pages.93-100
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- 1985
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- 0252-9777(pISSN)
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- 2287-8432(eISSN)
춘.추파성 소맥품종들의 생육 및 수량성분석
Analyses of Growth and Developmental Patterns and Subsequent Grain Yield of Selected Winter and Spring Wheat Cultivars Triticum aestivum L. em Thell
초록
벼-밀, 밀-콩 또는 밀-참깨 작부체계에 알맞은 밀품종 육성을 위한 육종 전략수립에 기초정보를 제공하기 위하여 육성배경, 유전 및 생태적 특성이 상이한 추.춘파성 소맥 10품종을 1개월 간격으로 5회 파종하였다. Zadoks등(1974)의 Growth Stage Code를 이용하여 이 품종들의 생장단계별 기간 및 수량성에 대하여 비교 분석하였다. 본 시험은 미국 오레곤주 주립대학교에서 실시되었으며 그 결과의 개요는 다음과 같다. 1. 추파성품종 조광과 춘파성 품종 중국81호는 간신장기에서 출수기까지의 기간이 짧았으나 등숙기간이 길었다. 추파성품종 Yamhill과 Hyslop은 간신장기에서 출수기까지의 기간이 긴 반면 등숙기간이 짧고 종실수량이 높았다. 2. 추파성품종이 춘파성품종에 비하여 환경변이에 대한 반응이 컸고 품종
Five winter and five spring wheat cultivars of diverse genetic backgrounds were evaluated to examine different developmental responses in terms of stages of the life cycle and grain yield when grown under the different planting dates. Greatest difference in growth and developmental patterns of the winter and spring wheat cultivars occurred in stem elongation, booting, inflorescence emergence and anthesis. The growth stage of stem elongation was found to exhibit larger difference both among planting dates and cultivars. Winter wheat cultivars responded more than spring wheat cultivars to the different planting dates. Winter wheat 'Cho Kwang' and spring wheat 'Jugoku 81' were earlier and exhibited faster growth and development, while winter wheats 'Yamhill' and 'Hyslop' were later in growth and development, but exhibited faster grain filling and higher rate of grain filling, resulting in higher grain yields. Crosses between winter and spring wheat gene pools would result in earlier maturity and higher productivity for both winter and spring wheat cultivars. For developing early maturing wheat cultivars for multiple cropping sequences while maintaining productivity, selection for earliness trait should be started at the stem elongation stage. Furthermore, the breeding materials should be planted at several times for selection of shorter life cycle genotypes adaptable to the cropping sequences. This is due to the genotype x planting date interactions.
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