不同熟性基因型棉花物质积累的动态特征

对不同熟性基因型棉花做不同的播期处理,以研究其在不同温光条件下物质积累动态特征。结果表明,不同熟性品种营养器官单株干物质积累为早播处理是:中熟品种>中早熟品种>早熟品种,中播和晚播处理是:中早熟品种>中熟品种>早熟品种,而且熟性越早,物质积累的关键时期越提前。中期播种有利于3个熟性品种的物质积累。从生殖器官来看,熟性早的品种,积累的干物质多于熟性晚的品种,播期早干物质积累的快且多。研究结果可为棉花生长机理模型的建立和生产调控提供理论依据。

The Dynamic Characteristics of Material Accumulation in Different Maturity Genotype Cotton

Different seedtime was adopted with different maturity genotype cotton,in order to study the dynamic characteristics of material accumulation in different temperature and sunlight. The results showed that the accumulation of nutritional organ of early-mid maturity was more than that of middle maturity, and the accumulation of nutritional organ of middle maturity was more than that of early maturity. The earlier the cotton mature, the earlier of the key period of material accumulation. The suitable sowing time is favorable for the material accumulation in three maturity cottons . On the other hand, the earlier maturity cotton accumulates more material than the later maturity cotton in the reproduction organ. The earlier sowing date is, the quicker and more material accumulates. The result offers theoretical basis for the establishment of growth mechanism model and production adjustment and control for cotton.