Stigma receptivity in cytoplasmic male sterile wheat
Stigma receptivity in cytoplasmic male sterile wheat
复制标题
DOI：
10.1071/ea9660175
复制
发表时间：
1966-01-01
期刊：
影响因子：
--
通讯作者：
IMRIE, B. C.
中科院分区：
文献类型：
--
作者：
IMRIE, B. C.
在堪培拉的植物试验室，通过测定在受控环境中培养的植株的结实率，估计了温度和相对湿度对小麦细胞质雄性不育系柱头可授性的影响。三个温度水平（26 [degree]C白天21 [degree]C夜晚，18[degree]C：13[degree]C，10 [degree]C：5 [degree]C）和两个湿度水平（75- 90%，40- 60%）与四次授粉（开花后1，3，5和7天）相结合。在中温低湿条件下，柱头可授性维持在较高水平。开花后7天授粉的植物平均结实率在中等温度下为41.2%，在高温下为0.5%，在低湿度下为43.2%，在高湿度下为7.1%。温度和湿度的影响是加性的。在开花后7天授粉的植物上，中等温度[长划线]低湿度组合的结实率高达77.4%。随着高温和高湿度的结合，开花后五天授粉的植物的结实率下降到0.4%。|| 摘要编辑：作者
The effects of temperature and relative humidity on stigma receptivity in a cytoplasmic male sterile wheat line were estimated by measuring per cent seed set on plants raised in controlled environments in the phyto-ron at Canberra. Three levels of temperature (26 [degree]C day 21 [degree]C night, 18[degree]C : 13[degree]C, 10 [degree]C : 5 [degree]C) and two levels of humidity (75-90 per cent, 40-60 per cent) were combined with four times of pollination (1, 3, 5, and 7 days after flowering) in a factorial design. Stigma receptivity was maintained at a high level under moderate temperature and low humidity conditions. Mean seed set on plants pollinated seven days after flowering was 41.2 per cent at the moderate temperature compared with 0.5 per cent at the high temperature, and 43.2 per cent at the low humidity compared with 7.1 per cent at the high humidity. The effects of temperature and humidity were additive. With a moderate temperature[long dash]low humidity combination seed set was as high as 77.4 per cent on plants pollinated seven days after flowering. With the combination of high temperature and high humidity seed set decreased to 0.4 per cent on plants pollinated five days after flowering. || ABSTRACT AUTHORS: Author