|Table of Contents|

Classification of Male-sterile Lines with RN Sterile Cytoplasm and Their Restorers(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2010年04期
Page:
559-564
Research Field:
Publishing date:

Info

Title:
Classification of Male-sterile Lines with RN Sterile Cytoplasm and Their Restorers
Author(s):
ZHANG Jing-yong;  SUN Huan; ZHAO Li-mei; PENG Bao; ZHANG Wei-long; LI Shu-guang; ZHAO Xiao-ming
Soybean Research Center of Jilin Academy of Agricultural Sciences, Changchun 130033，Jilin，China
Keywords:
Soybean; RN sterile cytoplasm; Types of CMS A-lines and R-lines
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2010.04.0559
Abstract:
The classification of male-sterile lines with RN sterile cytoplasm and their restorers was described in this paper. Representative genetic stocks including 9 pairs of male-sterile lines and their maintainers and 10 restorers were selected as experimental materials based on comprehensive test crosses and a preliminary experiment. All possible crosses were made between male-sterile lines and their maintainers, as well as their restorers. The F1s from crosses between male-sterile lines and their restorers could be divided into three categories of A （0~10%）, B（11%~60%）and C (≥61%) to indicate the degree of restoration according to the percentage of sterile pollen grains. Taking the distribution of A, B and C and the restoration spectrum as basic consideration the male sterile lines and the restorers were further classified. The result showed that any maintainer could maintain the sterility of all male sterile lines. The genetics of sterility maintenance seems simple: single recessive gene control. Three types of male sterile lines of very easy to be restored, easy to be restored and difficult to be restored were identified. The restorers could also be divided into three types-strong restorers, normal restorers and weak restorers. The male sterile lines that are very easy to be restored and the strong restorers are very valuable in the use of heterosis breeding. It is suggested that all three types of male sterile lines should be included as female testers in test crosses since the sterility restoration is quite complicated.

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