不同稻瘟病菌生理小种对水稻产量性状的影响

采用稻瘟病菌的各生理小种孢子接种水稻恢复系R725、R720和R727孕穗期的植株,研究不同稻瘟病菌生理小种对水稻产量性状的影响。结果表明,每个稻瘟病菌生理小种均能导致水稻减产。其中,稻瘟病生理小种ZA5对R725影响最大;ZC8对R720影响最大;ZA17对R727影响最大。多因素回归方程显示,在稻瘟病菌接种后结实率和千粒重是限制水稻产量的主要因子。...

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Bibliographic Details
Published in西南农业学报 Vol. 29; no. 2; pp. 298 - 301
Main Author 陈敬 易军 蒋芬 梁杰 胡运高
Format Journal Article
LanguageChinese
Published 西南科技大学生命科学与工程学院,四川绵阳,621000%西南科技大学水稻研究所,四川绵阳,621010 2016
Subjects
产量性状
水稻
生理小种
稻瘟病菌
Magnaporthe
稻瘟病菌
traits
race
产量性状
生理小种
水稻
grisea
Yield
Physiological
Rice
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Summary:采用稻瘟病菌的各生理小种孢子接种水稻恢复系R725、R720和R727孕穗期的植株,研究不同稻瘟病菌生理小种对水稻产量性状的影响。结果表明,每个稻瘟病菌生理小种均能导致水稻减产。其中,稻瘟病生理小种ZA5对R725影响最大;ZC8对R720影响最大;ZA17对R727影响最大。多因素回归方程显示,在稻瘟病菌接种后结实率和千粒重是限制水稻产量的主要因子。
Bibliography:CHEN Jing, YI Jun, JIANG Fen, LIANG Jie, HU Yun-gao（1. School of Life Science and Engineering, Southwest University of Science and Technology, . Agronomy Specialty; 2. Horticulture, Si- chuan Mianyang 621000, China; 3. Southwest University of Science and Technology Institute of Rice, Sichuan Mianyang 621010, China）
In order to study the effects of different physiological races of flee blast fungus on different resistance of rice materials of different yield traits, the sundry physiologic races of spores of Magnaporthe grisea were used to inoculate the restore line R725, R720 and R727 at booting stage of rice. The results showed that each of the physiological raees of flee blast fungus could cause reduction of flee output. Among them, ZA5 had the greatest effect on the R725 ; ZC8 had the greatest effect on the R720 ; ZA17 had the greatest effect on R727. Multi factor regression equation showed that after inoculating the Magnaporthe grisea, setting percentage and 1000 grain weight was a major factor limiting the
ISSN:1001-4829
DOI:10.16213/j.cnki.scjas.2016.02.016