小粒大豆各发育阶段与主要农艺性状相关的初步研究

A PRELIMINARY STUDY ON RELATIONSHIP BETWEEN EACH GROWING STAGE AND MAJAR AGROMIC PERFORMANCE OF SMALL—SEEDED SOYBEAN

摘要:

利用“栽培大豆×野生大豆”的杂交后代,进行小粒大豆(百粒重 ＜ 12克)各发育阶段与主要农艺性状相关的研究。试验结果表明:小粒大豆品系间各发育阶段的时间长短存在着差异,鼓粒期(R5—R7的天数)的变异系数最大(19.48%);结荚期(R3—R5的天数)与子粒产量的相关系数(r=-0.4474)和其对子粒产量的直接效应(P=-0.3674)均为负向的;鼓粒期与子粒产量呈显著的正相关(r=0.7889),对子粒产量的直接效应最大(P=1.5730);在小粒大豆的整个生育期中,对子粒产量影响最大的发育阶段是鼓粒期,鼓粒期长的子粒产量高。

Abstract:

Progenies from Cross ‘Ping Ding-si (G.max) ×GD50478 (G.Ssoja), were used to Study on relationship between each growing stage and majar gromic perfomance of small-Seeded Soybean (100 seeds weight＜12g).
The experiment results showed that differences in the days between specific developmental stage of line there Were Seed—filling duration (days of R₇—R₅) variation coefficients among them were highest (19.48%).The correlation coefficient between Pod—Setting duration (days of R₅—R₃) and seed yeild was positive (r=-0.4474),direct effect of it to seed yeild also was positive (P=-0.3674). There was correlated Significant possitively (r=0.7889^*) between seed—filling duration and seed yeild,direct effect of it to seed yeild was highest (p=1.5730). In all growing stage of small—seeded soybean, Seed—filling duration was effected highest to seed yeild.