摘要
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。
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 yield of rice.
出处
《西南农业学报》
CSCD
北大核心
2016年第2期298-301,共4页
Southwest China Journal of Agricultural Sciences
基金
国家科技支撑计划“长江上游优质抗病种质创制与新品种选育”(2014BAD01B03)
国家科技支撑计划“水稻新品种培育与扩繁”(2011BAD35B02)
国家政策引导类科技计划及其他专项?(抗病转基因水稻新品种培育2013ZX08001-002)
四川省育种攻关项目
四川省生物质资源利用与改性工程技术中心开展开放基金项目
四川省岗位专家项目(川农业函[2014]91号)
杂交水稻国家重点实验室开放基金项目(2014KF01)
关键词
稻瘟病菌
生理小种
水稻
产量性状
Magnaporthe grisea
Physiological race
Rice
Yield traits
