粳田 的英文怎麼說
中文拼音 [tián]
粳田
英文
uruchida-
The experiment was conducted in a 2. 4 ha isolated field mimic rice production practice with pollen competition. a japonica gm rice l201 containing bar gene with herbicide basta resistance was used as a pollen donor and six indica hybrid rice varieties and its male sterile ( ms ) lines and two common wild rice ( oryza rufipogon and o. nivara ) that share same aa genome with cultivated rice were used as recipients
本試驗選擇廣州作為華南水稻生態區的代表，以含bar基因（抗除草劑basta ）的轉基因粳稻l201為花粉供體，模擬大田生產實際，對轉基因向秈型兩系及三系雜交稻不育系、雜交稻品種及含aa基因組的普通野生稻的基因漂流及其影響因素進行了研究。Abstract : the main characters and seed set of bc1 ， bc2 ， bc1f2 from ms line back - crossing with the pollen of hybrid rice were studied. the appearance of a large number of self fertile plants in ms line was analyzed. the effect of introgression of restoring genes on ms line purity and hybrid yield in indica and japonica rice was discussed. it was pointed out that “ iso - cytoplasm restorer line ” was seriously reducing the purity of ms line and that hybrid rice was unsuitable for isolation zone in the seed production fields
文摘:研究了雜交稻花粉對母本不育系回交後代群體bc1 、 bc2 、 bc1f2的主要農藝性狀和育性表現，分析了不育系中出現大量自交結實株的原因，討論了恢復基因滲入對秈、粳不育系純度和雜交稻產量的影響，指出「同質恢」對降低不育系純度的嚴重性和雜交稻作制種田隔離區的不合理性。The dong nationality mainly goes in for agriculture and is also engaged in forestry at the same time
新中國成立后，統稱其為侗族。侗族人主要從事農業以種植粳稻為主，糯稻次之，並善於稻田養魚。
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