해바라기 수집종의 작물학적 특성
Agronomic Characteristics of Sunflower (Helianthus annuus L.) Collections
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농촌진흥청 국립농업유전자원센터로부터 국내외에서 수집된 해바라기 328종을 분양받아 바이오디젤 가능 작물로서 특성을 조사한 바 그 결과는 다음과 같다. 해바라기 수집종의 출아소요일수는 7～12일이었으며, 개화 소요일수는 55～86일로 폭넓게 분포하였다. 수집종 해바라기의 경장은 평균이 259 cm로 그 분포는 131～345 cm의 변이를 보였고, 성숙일수는 평균 35일이었다. 주당 頭花數는 1개～23개로 큰 변이를 보였으며, 두화의 크기는 평균 17.6 cm로 14.7～21.3 cm가 72.8%로 가장 높게 분포하였다. 두화 당 종자수는 평균 1,430개 정도, 종실중은 평균 91.4 g로 28～379 g로 넓은 분포를 보였다. 종실길이는 평균 11.7 mm, 범위는 9.0～21.5 mm 이었으며, 종실 폭은 평균 6.4 mm, 1 무게는 평균 322.5 g이었으며, 천립중은 평균 63.3 g, 주당 종실중은 평균 204 g이었다. 생육 및 종실 특성 중에서 두화 당 종자수의 변이가 가장 컸고, 다음으로 주당종실중의 변이가 컸다. 수집종들의 형질 간 상관분석 결과, 경장이 클수록 종실폭은 커지고 개화일수도 길어졌으나, 성숙일수와 생육일수는 짧았다.
Abstract
Abstract - To evaluate agronomic characteristics for the use of biodiesel crop, 328 collections of sunflower (Helianthus annus L.) were obtained from Genebank in Rural Development Adminstration (RDA). The necessary days from seeding to emergence of collections were from 7 to 12 days, and the days to flowering were widely distributed from 55 to 86 days. Stem length ranged from 131 to 345 cm with a mean of 259 cm, and the mean maturing days were 35 days. The number of head flower was 1～23 ea per plant, and the mean size of head flower was 17.6 cm with a range from 14.7 to 21.3 cm (72.8%). The mean seed number per head flower was 1,430 ea, and the weight of seed per plant ranged from 23 to 379 g with a mean of 91.4 g. The mean seed length was 11.7 mm with a range from 9.0 to 21.5 mm, and the mean diameter was 6.4 mm. The mean weight of seed per litter, 1000 grain weight and seed weight per plant were 322.5 g, 63.3 g and 204 g, respectively. Variation of number of head per plant was largest and weight of grain per plant was large in next among growth and grain characteristics. At the results of correlation analysis among characteristics, the seed diameter was getting bigger and the days for flowering dates were prolonged in the higher stem length plant, but the days to maturing and growth duration was shortened.
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