吉林省大豆品种资源研究 Ⅱ. 生育期及其构成与产量的关系

STUDIES ON GERMPLASM RESOUCES IN JILIN PROVINCE Ⅱ. THE RELATIONSHIP OF THE MATURITY GROUPS, THE DAYS OF EACH GROWING STAGE AND THE YIELD

摘要:

本文分析了吉林省大豆栽培品种生育期类型及其生育期构成与产量的关系。结果表明,大豆产量是随生育期延长而增加的。认为大豆高产的生育期类型是与当地生态条件相适应的类型,在一定生态区内,采用明显早于当地生育期类型品种,靠早熟密植提高单产的策略是不可取的,应采取选育推广与当地生育期相适应的高产品种策略。同一生育期类型品种,产量与出苗至开花始期的天数无关,与开花始期至鼓粒始期的天数呈负相关,与鼓粒始期至成熟期的天数呈正相关。开花始期至鼓粒始期较短、鼓粒始期至成熟期较长的性状,在产量育种中,可作为选择的间接依据之一。

Abstract:

1980—1985, 648 soybean cultivars in Jilin province were used to analyze.The relationship of the maturity groups, the days of each growing stage and the yield were analyzed.It was found that the yield increased with the days of growing period under which cultivars could mature.It was suggested that the maturing group of cultivars should be adapted to local growing season.To select much more early-maturing cultivar was not preferable.
within a maturing group, days from emergence to R1 had null correlation with the yield;days from R1 to R5 was significant negative correlated to the yield, while days from R5 to R8 showed significant positive correlation with the yield.It was suggested that the days from R5 to R8 may be one of selective targets in breeding.