【作者】 景忆莲； 刘耀斌； 冀伟； 范万发； 李胄； 田志诚；

【Author】 JING Yi-lian, LIU Yao-bin, JI Wei, FAN Wan-fa, LI Zhou, TIAN Zhi-cheng(Cotton Research Institute, College of Agronomy, Northwest A & F University, Yangling, Shaanxi 712100, China)

【机构】 西北农林科技大学农学院棉花研究所；

【摘要】 以11个陆地棉品种(系)为亲本,组配成7个组合,在08:30至17:30内的10个时间段,分别给母本柱头授以自然花粉及冰箱保存花粉,以杂交结实特性为考查指标,研究了棉花花粉及柱头生活力表现。分析认为,当地自然条件下,柱头活力为1天半时间,开花当天柱头活力呈“不对称双峰”特征,09:30-10:30及15:30-16:30是柱头活力旺盛时段。花粉活力可维持1天,以09:30-10:30生活力较强,随时间推后,花粉活力大幅度衰减。更多还原

【Abstract】 7 crosses from 11 lines of upland cotton were made. At 10 intervals from 8:30 to 17:30, Pistil stigma of female parents were pollened with natural pollen and pollen storaged in refrige respectively. Seeding properties were used as research characters to study the viability of pollen and pistil stigma of upland cotton. The results showed that the of viability pistil stigma was one and a half days at local natural conditions. On the flowering day, the viability of pistil stigma showed a double-peak unsymmetrical characteristic, with higher viability from 9:30 to 10:30 and from 15:30 to 16:30. The pollen longtive of viability was only one day. Pollen viability from 9:30 to 10:30 was higher. As the time went on, Pollen viability quickly declined. Based on these results, the pollination methods and techniques on seed works of cotton heterosis utilization was discussed.更多还原