新型温敏不育系(IVA)育性转换初步观察  

Preliminary Observation of Fertility Changes in the New Type Temperature. Sensitive Male-sterile Rice IVA

作　　者：张自国[1] 元生朝[1] 曾汉来[1] 李玉珍[1] 李自成 魏存龙 

机构地区：[1]华中农业大学 [2]云南省元江县农科所

出　　处：《杂交水稻》1991年第1期31-34,共4页Hybrid Rice

摘　　要：新型温敏雄性不育水稻（ ＩＶＡ）是通过杂交育成，属较低温度不育、较高温度可育新类型。诱导育性转换的敏感期为花粉母细胞形成期至花粉单核早期。日平均温度低于２４ ℃，花粉１００％典败，自交结实率为０；日平均温度高于２７℃，花粉碘染率可达８０—９０％以上，自交结实率达５０％以上，最高结实率可达７０％。可作两系杂交稻的亲本利用。Pollen fertility of the new type temperature sensitive male-sterile rice Ⅳ A changed as the temperature changed. The lower temperature induced sterility and the higher temperature induced fertility. The sensitive phase of inducing fertility changes was from the formation stage of pollen mother cells to early phase of single nucleus pollens. In this phase, ⅣA showed male sterility below 24℃ and fertility above 27℃. The fertility changes could be used in two-line hybrids breeding.

关 键 词：杂交水稻 温敏不育系 育性转换 

分 类 号：S511.103.5[农业科学—作物学]