摘要
通过对忠县马尾松种子园２７个无性系花期的观察，结果表明：雌雄花期历时１３ｄ，雄球花散粉盛期只有３３ｄ，雌球花可授粉盛期有６ｄ；无性系间及无性系内分株间花期虽有差异性，但用反映亲本在开花期间母本接受父本花粉机率的开花物候重叠指数对无性系花期分析表明２７个无性系间及无性系内分株间花期同步性是较好的，能随机交配。
The flowering period of Pinus Massoniana Lamb of 27 clones was observed in seed orchard in this paper, showing the results showed that the flowering period of female and male last 13 days. It is 3 3 days during which more pollen releases, and it is 6 days of opitmum receptivity period of female. The flowering period of different clones and different ramets within clones is obviously different. The synchronization of flowering period of 27 clones and different ramets within clones was analysed by using index of phenological overlap in flowering of reflecting probability of female cone accepting pollen of paternal among parent plants during flowering, and it is better. The different clones and different ramets within clones could outcross randomly.
出处
《四川农业大学学报》
CSCD
1998年第4期444-451,共8页
Journal of Sichuan Agricultural University
关键词
花期
种子园
开花物候
重叠指数
马尾松
THE FLOWERING PERIOD SEED ORCHARD FLOWERING PHENOLOGY INDEX OF OVERLAP PINUS MASSONIANA LAMB.
