|Table of Contents|

THE CORE ANCESTORS OF SOYBEAN CULTIVARS RELEASED DURING 1923-2005 IN CHINA(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2007年05期
Page:
641-647
Research Field:
Publishing date:

Info

Title:
THE CORE ANCESTORS OF SOYBEAN CULTIVARS RELEASED DURING 1923-2005 IN CHINA
Author(s):
XIONG Dong-jin1; 2; ZHAO Tuan-jie1; GAI Jun-yi1
1. Soybean Research Institute of Nanjing Agricultural University/National Center for Soybean Improvement/National Key Laboratory for Crop Genetics and Germplasm Enhancement，Nanjing，210095；
2.School of Life Science，Nanchang University，Nanchang，330047
Keywords:
Soybean; Released cultivar; Core ancestor
PACS:
S565.1
DOI:
10.3969/j.issn.1000-9841.2007.05.001
Abstract:
Screening and identification of core ancestors will facilitate the better utilization of soybean germplasm.Total 670 ancestors were identified based on the pedigree data of the 1300 soybean cultivars released during 1923-2005 in China.The 113 core ancestors out of the 670 were nominated according to the number of derived cultivars，nuclear genetic contribution，cytoplasmic genetic contribution and number of breeding cycles of each ancestor.Among them，34,28，10，14，4，3 and 20 were from Ⅰ，Ⅱ，Ⅲ，Ⅳ，Ⅴ，Ⅵ eco-region and abroad，respectively.It accounted for 16.87% of the total ancestors and provided 70.90% nuclear and 74.85% cytoplasmic genetic contribution to the whole released 1300 cultivars.In comparison with the core ancestor nomination for the cultivars released during 1923-1995，66 core ancestors were the same，while 9，9，13 and 16 were added to Ⅰ，Ⅱ，(Ⅲ+Ⅳ+Ⅴ+Ⅵ) and abroad，respectively.The nominated core ancestors can be used to study the genetic bases and relationship of Chinese released soybean cultivars as well as the utilization of parental materials and the core collection of soybean germplasm.

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Last Update: 2014-10-20