微胚乳超高油玉米和高油115玉米的干物质积累规律研究  

Research of Dry Matter Accumulation in Micro-endosperm Super-high Oil Corn and Gaoyou 115 Corn

作　　者：甘凤琼[1] 张亚平[1] 吴子恺[1] 

机构地区：[1]广西大学农学院,南宁530005

出　　处：《种子》2008年第6期5-7,共3页Seed

基　　金：国家自然科学基金项目(30671307);教育部高等学校博士学科专项科研基金(2004059004);广西研究生教育创新计划项目(2006105930901D08)

摘　　要：研究了干物质重在微胚乳超高油玉米和高油115玉米的胚、非胚部位以及整粒玉米中的变化规律。结果表明:微胚乳超高油玉米和高油115玉米胚干重在整个籽粒形成过程中基本上呈线性增长,前者稍低于后者。微胚乳玉米和高油115非胚干重峰值分别出现在授粉后28天和42天,前者峰值只达到后者的29.94%～43.32%。微胚乳玉米和高油115整粒干重峰值出现在授粉后35天和49天,前者单粒产量是后者的26%～42%。微胚乳玉米单粒产量不高的原因主要是由于非胚部位灌浆期较高油115玉米缩短2～3周。微胚乳玉米胚重比增速高于高油115,收获时前者的胚重比为后者的2.13～2.73倍,达到41.16%～52.60%。The Change rule of the dry weight of corn embryo, OSK （the other section of a.kemel except embryo） and the whole kernel in the developing grains of micro-endosperm super-high oil corn and Gaoyou 115 corn were studied in this article. The results showed that the embryo dry weight of both of micro-endosperm corn and Gaoyou 115 corn were basically kept linear growth, and the former was slightly smaller than the latter The peak OSK dry weight of micro-endosperm corn and Gaoyou 115 corn were respectively in 28 DAP （days after pollination） and 42 DAP,and the former was about 29.94% -43.32% of the latter. The whole kernel peak dry weight of micro-endosperm corn and Gaoyou 115 corn were respectively in 35 DAP and 49 DAP. The former single kernel output is the 26% -42% of the latter. Why micro-endosperm corn had low grain yield is mainly due to OSK filling Stage shortened 2 to 3 weeks than Gaoyou 115 corn. The micro-endosperm corn had a quicker growth than Gaoyou115 corn in embryo weight ratio, so the former embryo weight ratio was the latter＇ s 2.13 -2.73 times at harvest time. It can reach to 41.16% -52.60%.

关 键 词：微胚乳超高油玉米 高油115玉米 干物质重 积累 

分 类 号：Q945.65[生物学—植物学] S513[农业科学—作物学]