|Table of Contents|

Evolution Tendency for Agronomic Characters of Major Soybean Cultivars in East Heilongjiang Reclamation Area from 1980-2008(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2009年04期
Page:
628-631,640
Research Field:
Publishing date:

Info

Title:
Evolution Tendency for Agronomic Characters of Major Soybean Cultivars in East Heilongjiang Reclamation Area from 1980-2008
Author(s):
YU Feng-yao; XIN Xiu-jun; ZHANG Dai-jun; ZHOU Shun-qi; QIU Hong-mei
Hongxinglong Research Institute of Heilongjiang Land Reclamation Bureau，Youyi 155811，Heilongjiang，China
Keywords:
Agronomic characters; Genetic parameters; Yield; Improving potential
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2009.04.0628
Abstract:
It is very important to efficiently study evolution tendency of agronomic characters in soybean breeding.Twelve soybean cultivars released in Heilongjiang province from 1980 to 2004 were selected and divided into 3 stages(early，middle，and recent) and 3 types (high oil，high protein，high yield).The genetic parameter and improving potential of soybean main agronomic traits among stages and types were investigated.Highest yield increment occurred in high-yield type cultivars，with recent cultivars increased by 17.2% and 23% compared with middle and early ones.Yield of high-protein cultivars increased 7.2%.Pod number per plant and seed number per plant of recent high-yield and high-protein all significantly increased than middle ones，and seed weight per plant of high-yield cultivars also significantly increased.For high-oil cultivars，only pod number per plant of recent cultivars increased compared with middle ones.Plant height decreased and node number of main stem increased for recent cultivars.For current high-oil cultivars，oil content increased 0.82%，protein content decreased 1% than early ones.Oil content of recent high-protein cultivars significantly decreased by 0.71% than middle ones.Genetic variation coefficient(GVC) and improving potential (IP) of each trait showed that seed weight per plant，pod number per plant，seed number per plant and node number of main stem have greater improving potential，while plant height，100-seed weight，protein content and oil content have smaller improving potential.

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Last Update: 2014-09-21