Screening and Preliminary Studies of Restorers of Radish Cytoplasmic Male Sterile Lines in Brassica napus L.

doi:10.7668/hbnxb.2010.04.022

Abstract

Abstract: In order to obtain restorers of radish cytoplasmic male sterile lines in Brassica napus and breed radish cytoplasmic male sterile(RCMS) hybrids for rapeseed production，restorer R2008 of RCMS lines was screened from Corrida after self pollinations and testcrosses for more than 10 years. Corrida was mixture of RCMS hybrid without pollens and pollen supplier line. R2008 could restore the fertility of RCMS lines in different years. Therefore，sterile line， maintainers and restorers of RCMS were obtained. The genetic studies indicated that the restorer was controlled by one dominant gene. The genotype of RCMS lines was S(rr) ，restorer line was ? (RR) and maintainer line was N (rr) . All present Brassica napus lines were maintainers of RCMS lines. Compared with local rapeseed varieties，R2008 has longer growth period (240 days) ，higher erucic acid content (12. 93%) ，higher glucosinolates content (78. 63 μmol / g) ，l ower silique-bearing percentage (74. 89%) and more serious cold injury (cold injury rate was 100% and cold injury index was 73. 5) . All agronomic characters of R2008 must be improved before qualified RCMS hybrids are put into rapeseed production.

Key words: Brassica napus L., Radish cytoplasmic male sterile line, Restorer, Genetics

CLC Number:

S6.403

WEN Yan-cheng, ZHANG Shu-fen, WANG Jian-ping, ZHU Jia-cheng, ZHAO Lei, CAO Jin-hua. Screening and Preliminary Studies of Restorers of Radish Cytoplasmic Male Sterile Lines in Brassica napus L.[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(4): 102-106. doi: 10.7668/hbnxb.2010.04.022.

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