温度湿度及种球茎大小对花魔芋有性繁殖的影响

有性繁殖是促进魔芋种植业发展和品种改良的有效途径，引起了极大的兴趣。本文研究117个花魔芋（Amorphophallus konjac K. Coch)单株花粉成熟后连续5d的温度、湿度以及花芽种球茎对其有性繁殖的影响，结果表明：授粉期间的温度和湿度对其自花授粉结实影响大，结实株花粉成熟后连续5d的平均温度和湿度分别为24℃和64%，均显著高于不实株，高温高湿有利于散粉和花粉的萌发从而完成受精；花芽种球茎大小对有性繁殖也有影响，结实株平均种球茎重显著高于不实株，且与单株结实浆果数呈极显著的正相关（r=0.6096, N=29），因此，宜选用花芽球茎大的用于魔芋有性繁殖。

Effect of Temperature, Moisture and Weight of Seed-Corm on the Sexual Reproduction of Amorphophallus Konjac K. Coch

The sexual reproduction of konjac was one of the most effective approaches to accelerate development of planting and improvement of cultivars, and it was attracted particular interest. In this paper, the influence of the temperature and the moisture in continuous 5d after pollen matured, and the weight of seed-corm with bud on the sexual reproduction of Amorphophallus konjac K. Coch was investigated with 117 individual plants. The results indicated that the means of temperature and moisture for the plants with berries developed being of 24℃ and 64%, respectively, were significantly higher than which of no-berries plants, additionally, the weight of the seed-corm or tuber of plants with berries developed was significantly higher, and it was positive correlative to the berries of single plant with the coefficient of r=0.6096 (the No. of samples =29). It suggested that higher temperature and moisture were helpful to the pollen scattering and germinating, and that the nutrients supplied at the periods of konjac sexual reproduction was derived from the seed-corm.