嫁接西瓜干物质的积累与分配规律研究

目的]对比分析嫁接西瓜(Citrullu slanatus)和自根西瓜不同生育期各个器官干物质的积累与分配特性,揭示嫁接对西瓜干物质积累与分配规律的影响。方法]嫁接用的砧木为杭州长瓠、接穗为设施精品小西瓜小兰。在自根与嫁接西瓜的生长过程中,于幼苗期、营养生长旺期、开花坐果期、结瓜盛期、结瓜末期和拉蔓期各个生育阶段分别取3株,将其根、茎、叶、果实分开,测鲜重及干重。结果]嫁接西瓜植株根、茎、叶和果实中干物质积累量显著高于自根西瓜;自根西瓜和嫁接西瓜干物质积累量的变化趋势大致相同。结论]该研究可为嫁接西瓜的大面积栽培提供科学依据。

Study on the Characteristics of Dry Matter Accumulation and Distribution of Grafted Watermelon(Citrullu slanatus)

Objective] The aim was to comparatively analyze the dry matter accumulation and distribution characteristics of all organs of grafted and own-rooted watermelon at different growth stages, to reveal the effects of grafting on dry matter accumulation and distribution of watermelon. Method] The rootstock was Hangzhou-long gourd, scion was fine and small watermelon in greenhouse Xiaolan. During the growth of own-rooted and grafted watermelon, three plants were taken at different growth stages and then their root, stem, leaf and fruit were separated to determine their fresh and dry weight resp.. Result ] The results showed that the dry matter accumulation amount of grafted watermelon was remarkably higher than.that of own-rooted watermelon, but their change tendency was in the same. Conclusion] The study provides a scientific basis for cuhivating of gafted watermelon in a large scale.