Genetic Improvement of Growth Stage Structure of Soybean Lines from Cross and Backcross(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:

2010年03期

Page:

374-379

Research Field:

Publishing date:

Info

Title:

Genetic Improvement of Growth Stage Structure of Soybean Lines from Cross and Backcross

Author(s):

XIE Fu-ti¹;  WANG Chuang¹;  ZHANG Hui-jun¹;  AO Xue¹;  WANG Hai-ying¹; Steve K.St.Martin²

1.Agronomy College of Shenyang Agricultural University, Shenyang 110866, Liaoning, China;

2.The Ohio State University,Columbus,OH43210,USA

Keywords:

Soybean; Cross; Backcross; Growth stage structure; Genetic improvement

PACS:

S565.1

DOI:

10.11861/j.issn.1000-9841.2010.03.0374

Abstract:

Soybean growth stage structure is related with the yield of soybean cultivars. Two determinate soybean cultivars from Liaoning and two semi-determinate cultivars from The Ohio State University were used to make single cross or backcross for the evaluation of genetic improvement on growth stage structure in the offspring generations. The results showed that the days of reproductive growth(R1-R8) stage, blooming（R1-R3） stage, podding （R3-R5）stage of determinate parental cultivars were significantly fewer than those of semideterminate parents. There was no significant effect on the days of vegetative growth （VE-R1）stage and podding stage in the backcrossing generations if the determinate cultivars were used as the backcross parent, whatever as a male or female backcross parent.When determinate cultivars were used as backcross parents, the female parent had a larger effect on the growth stage structure in the backcrossing offsprings. There was a greater effect on the the growth stage structure in the backcrossing offsprings if the semideterminate cultivars were used as a backcross parent.

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