小麦光敏雄性不育系A31在不同生态地点的育性变异.pdf

Chinese Ag ricu tura Science Bu etin V o 20 No 2 2004 A pri 76 htt p: / / zntbchinajourna net cn A31 马翎健, 何蓓如, 宋喜悦, 胡银岗 ( , 712100) : 通过在不同生态点的育性试验, 观察光敏小麦 性不育系A 31 的育性表现和育性转换 特性A3 1在7 个不同生态点的自交结实率结合各试验点的光温条件分析表明, 其 性育性随日 长增加有明显的下降趋势, 日长是影响A31 育性的主导因素, 在日长相近条件下, 温度对A31 育性也有一定的效应; A 31 育性转换的临界日长约在 145 h 左右 : 小麦; 光周期敏感; 性不育系; 育性转换 Fertility Variation of Wheat Photoperiodsensitive Male Sterile Line (A31) in Different Ecological Areas M a Lingjian , He Peiru , Song Xiyue, Hu Y ingang ( College of Agronomy, Northwest SciTech Univ ersity of A griculture and Forestry , Y ang ing 712100) A stract: T hrough observing f ert i e changes of A 31 by t he ferti it y experiment s in 7 diff erent eco ogi ca areas t he resu t show ed that the ma e fert i it y of A3 1 w i dec ine when the day eng th becomes shorterT he day eng th is the majorcause of f ert i e changes of A 31T he ma e f ert i ity of A 31 is a so sensit ive to the temperature T he crit ica dayengt h of fert i e changes of A 31 is about 145 hours Key words: Wheat ; P hotoperiodsensit ive; Ma e steri e ine; Ferti e change 20 70 , 1 11 试验材料 A 31 94 3194 31 5 4D 60 , ( ) ( 2n= 42) Co- [ 1] Sasakuma , 12 试验方法 1997 ~ 2000 , D2 ,