8个板栗品种开花特性及其与低产的关系

对８个板栗品种开花特性及其与低产的关系进行了研究。结果表明，板栗雄花序先于雌花形成，而且雄花序多雌花少，在营养分配、输导上不利于雌花形成和发育。仅在结果枝上平均每一雌花就拥有４．２７￣８．６２条雄花序。各品种结果枝平均仅有１．４０￣１．８７朵雌花。结果母枝抽生的枝梢中，结果枝仅占２９．７５％，每一结果母枝仅有２．４４朵雌花。结果枝长度和粗度与转化成结果母枝的能力呈正相关，但是结果枝挂果后往往生长发

Flowering Properties in Varieties of Chinese Chestnut and Their Association With Low Yield

A study on flowering properties in 8 varieties of Chinese chestnuts and their association with low yield showed that formation of male inflorescences was prior to that of female flowers with the former being more than the latter On each of fruit bearing shoots,there were 4 27 to 8 62 male inflorescences on an average for each female flower Fruit bearing shoots only accounted for 29 75% in all grown from those capable of bearing fruiting shoots and only 2 44 female flowers were found on each of fruiting shoots bearers Both length and thickness of a fruit bearing shoot were positively correlative to its ability to be a fruiting shoot bearer Resulting from their bad development after fruiting,fruit bearing shoots decreasingly converted to fruiting shoot bearers,which leads to fewer fruits and further the low yield