National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China.
National Key Laboratory of Crop Genetic Improvement, MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei 430070, China.
Plant Physiol Biochem. 2015 Nov;96:281-7. doi: 10.1016/j.plaphy.2015.08.009. Epub 2015 Aug 18.
The influences of high temperature and fertilization with biochar and phosphorus (P) on the pollen characteristics of two rice cultivars (IR-64 and Huanghuazhan) were examined in controlled growth chambers. Temperature treatments included high daytime temperature (HDT), high nighttime temperature (HNT) and ambient temperature (AT). The fertilization treatments were control, biochar alone, P alone and biochar + P. High temperature severely reduced pollen fertility, anther dehiscence, pollen retention and pollen germination of both rice cultivars, with HNT more destructive than HDT. The Huanghuazhan cultivar performed better than IR-64 under high temperature, with higher pollen fertility, better anther dehiscence and greater pollen retention and germination rates. In both cultivars, the pollen of plants treated with biochar + P were more resistant to heat induced stress. Further studies are needed to test the ability of biochar to ameliorate the effects of different abiotic stresses in rice and other crops.
在控制生长室中，研究了高温和生物炭与磷（P）施肥对两个水稻品种（IR-64 和 Huanghuazhan）花粉特性的影响。温度处理包括高温白天（HDT）、高温夜间（HNT）和环境温度（AT）。施肥处理包括对照、生物炭单独、P 单独和生物炭+P。高温严重降低了两个水稻品种的花粉活力、花药开裂、花粉保持和花粉萌发，其中 HNT 比 HDT 更具破坏性。在高温下，Huanghuazhan 品种的表现优于 IR-64，具有更高的花粉活力、更好的花药开裂以及更高的花粉保持和萌发率。在这两个品种中，用生物炭+P 处理的花粉对热诱导的胁迫更具抗性。需要进一步研究生物炭缓解水稻和其他作物不同非生物胁迫影响的能力。
Zotero 插件