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- Double fertilization The fusion of one pollen nucleus with the egg to form the zygote and of the other pollen nucleus with a polar nucleus to form the triploid endosperm nucleus. 双受精:指花粉粒中的一个精子与胚珠中的卵细胞结合形成受精卵,另一个精核与极核结合形成三倍体的胚乳核。
- This paper deals with the components of generic variances for triploid endosperm traits of generation populations derived from a cross between two pure lines. 摘要 本文论述由两个纯系杂交而衍生的各种世代群体的胚乳性状的遗传方差分量。
- The results indicated that the diploid embryo genetic effects were important for all lysine traits as well as triploid endosperm,cytoplasmic and diploid maternal plant genetic effects. 结果表明,除了三倍体胚乳核基因、细胞质基因和二倍体母体核基因的遗传效应可影响赖氨酸含量等性状外,二倍体胚基因效应也起着重要作用。
- The differences of expression at different environments for triploid endosperm nuclear genes, cytoplasmic genes and diploid maternal plant nuclear genes were found for the performance of TR. 控制稻米透明度性状表现的三倍体胚乳核基因、细胞质基因和二倍体母体植株核基因效应在不同环境下存在着表达水平上的差异。
- Triploid endosperm 三倍体胚乳
- In flowering plants the endosperm tissue is usually triploid, resulting from the fusion of one of the pollen nuclei with the two polar nuclei. 在开花植物中,胚乳组织多为三倍体,由一个花粉核和两个极核融合产生。
- The pollen grain germinates on a special extension of the carpel, the stigma, and double fertilization results in a diploid zygote and triploid (usually) endosperm nucleus. 花粉粒在柱头上萌发,双受精导致双倍体的合子和三倍体的胚乳形成。
- The endosperm development is of cellular type. 胚乳发育为细胞型。
- Triploid clones of Populus tomentosa Carr. 三倍体毛白杨
- The endosperm was the cellular endosperm. 胚乳为细胞型胚乳。
- Both gumsare the ground endosperm of seeds. 两种胶都是种子磨细的胚乳。
- Both gums are the ground endosperm of seeds. 两种胶都是种子磨细的胚乳。
- Seeds with straight oily embryo and thin endosperm. 种子有直的油性的胚和薄的胚乳。
- Seeds with abundant endosperm and small embryo. 种子有丰富的胚乳和小的胚。
- Endosperm copious;cotyledons flat. 胚乳丰富子叶平。
- Endosperm is not had or not be amylaceous shape. 胚乳无或不为淀粉状。
- Seed compressed, endosperm ruminate. 种子压扁,胚乳嚼烂状。
- Seeds ovoid, endosperm ruminate. 种子卵球形,胚乳嚼烂状。
- Seeds compressed, endosperm smooth. 种子压扁,胚乳平滑。
- Embryo minute, endosperm copious, oily. 胚微小,胚乳丰富,含油。