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Effect of Elite Lines on A Specific Soybean Breeding Program(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2009年03期
Page:
370-376
Research Field:
Publishing date:

Info

Title:
Effect of Elite Lines on A Specific Soybean Breeding Program
Author(s):
XIE Fu-ti1; Steven K.St.MARTIN2
1Agricultural College of Shenyang Agricultural University，Shenyang 110161，Liaoning,China；
2Department of Horticulture and Crop Science，Ohio Agriculture Research and Development Centre,The Ohio State University，Columbus，OH 43210-1086,A
Keywords:
Soybean; Elite line; Breeding
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2009.03.0370
Abstract:
Genetic variability that arises from genetic diversity benefits the successful soybean breeding program，breeders analyze the pedigree of breeding populations to examine the genetic structure of their populations.The objective of this study was to evaluate the effect of elite entries which had an important role in the yield improvement of the OSU soybean breeding program.The OSU soybean breeding program，usually used the new elite lines from itself breeding program or from other programs as parents to make the new cross in each year，changed the pedigree percentage of elite lines in different years，and the years as the elite line used as parents was limited.However，as there was a lack of breeding materials for food grade soybean breeding，the Ohio FG1 used for a longer time.Kottman，A98-980047，U 97-3114，HS 98-3628，HS 94-4533，Athow，and HS 93-4118 these 7 parents were the best elite lines for the yield improvement of the OSU program.There was a linear relationship between the mean yield of entries with ≥50% pedigree of elite lines and the mean yield of all tested entries（ P=0.0002).The correlation of the mean yield of entries with ≥50% pedigree of elite lines and the mean yield of all tested entries was 0.9146，they had a similar trend.There was no linear relationship between the pedigree percentage of elite lines and the mean yield of all tested entries，which meant that making new cross for the yield improvement should consider the combinability of elite line，not just the quantity of elite lines as parents.The mean yield of entries derived from 11 of 26 elite lines was over check，7 of 11 was from the OSU breeding program，the breeding materials played a key role in the yield improvement.The 7 elite lines were related with five old cultivars（Williams，Essex，Amsoy，Wayne and Corsoy）and a current cultivar A 86-301024.From 1998 to 2008，17 of 38 parents of the oil-use cultivars，and 14 of 16 parents of the food-grade cultivars were from the OSU program.The elite lines had an important effect on the development of cultivars.

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Last Update: 2014-09-25