...抽穗期；QTL；基因定位 [gap=1715]Key words: Rice (Oryza sativa L.) ; Single segment substitution line (SSSL) ; Heading date (HD) ; QTL ; Gene mapping ...
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Nitrogen could ensure soluble sugar, SOD and POD at a higher level before heading date.
施氮处理能保证叶片在抽穗期前的可溶性糖、过氧化物歧化酶和超氧化物歧化酶的含量处于较高的水平。
参考来源 - 节水灌溉条件下作物根区水氮迁移和高效利用机制研究Breeding for heading date, especially shortening heading date is of very important to rice production.
通过遗传育种方法改变品种的生育期，特别是缩短生育期，对水稻生产的发展具有重要意义。
参考来源 - 水稻早熟基因显性抑制基因的遗传分析和分子标记定位The main results are as follows:1. Effect of leaf-age of transplant on the heading dateThe heading date of rice was different of as sowed the same day but transplanted different leaf-age.
试验的结果如下:1.相同的播期,不同的叶龄移栽,水稻的播抽期产生一定程度的变化不同叶龄移栽,水稻的播抽期(播种至抽穗的时间)可分为播抽期稳定期、播抽期延长期和播抽期缩短期。
参考来源 - 水稻感营养性的初步研究A natural rice mutant lhd3(leafy head 3) with delayed heading date was isolated from progenies of a japonica cultivar,Changyou 94.
从常规粳稻常优94后代中筛选到一份自然突变的抽穗期延迟的类树稻突变体lhd3(leafy head 3)。
参考来源 - 一个水稻类树稻突变体(leafy head 3)基因的精细定位·2,447,543篇论文数据，部分数据来源于NoteExpress
These mutants were almost accompanied by variations in agronomic traits such as dwarfism, high sterility, heading date or grain weight.
抗病突变体大多伴随着株高、熟期、育性或粒重等农艺性状的变异。
Recently, great advances have been made in the identification, mapping, cloning and action mechanism of heading date genes, especial QTL in rice.
近年来，在水稻抽穗期基因的发掘、定位、克隆及作用机制等方面，特别是QTL研究方面取得较大进展。
Higher GA3 content in single ridge stage might delay heading date, but higher IAA content in floret differentiation stage might shorten heading date.
单棱期较高水平的GA 3具有延长抽穗期的作用，而小花分化期较高水平的IAA含量则具有缩短抽穗期的作用。
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