| 邱振国1，2，张平湖1，刘家矩2，刘良成2，梁铁军2，钟月生2.喷施“九二○”对光温敏核
不育系柱头外露的影响[J].广东农业科学,2015,42(20):1-3 |
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喷施“九二○”对光温敏核
不育系柱头外露的影响 |
| Study on response of stigma exsertion rate of photo-thermosensitive genic male sterile lines to“ 920” |
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| DOI： |
| 中文关键词: 光温敏核不育系 “九二○” 柱头外露率 |
| 英文关键词: photo-thermo sensitive genic male sterile lines “920” stigma exsertion rate |
| 基金项目:国家中小企业科技创新项目（ 1 3 C
2 6 2 1 4 4 0 4 5 4 2 ）；广东省产学研重大成果转化项目
（2013B090200027）；广东省中小企业科技创新项目
（2013B011201170）；广东省“扬帆计划”2014 年重点人
才工程项目（罗定市稻米高尖人才孵化工程） |
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| 中文摘要: |
| 选用4 个光温敏核不育系，考察其在自然条件和喷施“九二○”条件的柱头外露率，了解其柱头
外露特性，研究喷施“九二○”对不育系柱头外露的影响。结果表明，自然条件下各不育系柱头总外露率介于
79.8%~87.1% 之间，处于较高水平，GD-7S 最高，各不育系外露柱头都是单边外露居多。在喷施“九二○”条
件下，各不育系（除GD-7S）柱头总外露率得以提高，普遍提高柱头单边外露率，对柱头双边外露率则因不育
系而异，兴86S 柱头总外露率对“九二○”反应最好，提高程度最高。可见，“九二○”能提高不育系柱头外
露率，尤其是单边外露率 |
| 英文摘要: |
| To understand stigma exsertion characters of photo-thermo sensitive genic male sterile lines（ PTGMS
lines），the effects of“ 920” on stigma exsertion of 4 PTGMS lines were studied by spraying with“ 920”or not in the
natural field conditions. The results showed that under natural conditions the stigma exsertion rates of the 4 PTGMS
lines were at a high level between 79.8%~87.1% and the line with highest stigma exsertion rate was GD-7S，and most of
the stigma exsertion were unilateral. The totalstigma exsertion rates of the PTGMS（except GD-7S） were all increased
by spraying with“ 920”， especially for the unilateral stigma exsertion. For the bilateral stigma exsertion rates，the
responses of the different PTGMS lines to“ 920” were different. The line with largest increase of stigma exsertion rate and
best response to“ 920” was Xing86S. It could be seen that“ 920” could increase the stigma exsetion rates of the PTGMS
lines in this study，especially the unilateral stigma exsertion rate. |
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