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Develop ing tendency of ma jor agronom ic characters
of early - ma tur ity soybean s in He ilongjiang prov ince
FEI Zhi - hong1 , XIE Fu - di2 , ZHU Hong - de1 , ZHANG Jun1
(1. College of Plant Science and Technology, Heilongjiang August First
and Reclam ation Un iversity, Daqing 163319, China;
2. Agronom y College , S henyang Agricultural University, S henyang 110161, China)
Abstract: The genetic imp rovement tendency of main agronomic characters of early - maturity soybean varie2
ties developed by Heilongjiang in the last 20 years showed that pods with 3, 4 seeds, pods per p lant, seed weight
per p lant, p lant heigh, number of branches and effective nodes tended to increase obviously, whereas bottom pod
height decreased. Seeds per p lant, seeds per pod, 100 - seed weight and p rotein content increased in early years
and decreased in later years. In contrast, oil content tended to decrease in early years and increase in later years.
Key words: Soybean; Agronomic characters; Develop ing tendency
24 中国油料作物学报　2006, 28 (1)