Observe the meiosis on the F1 hybrid of Orychophragmus violaceus.
观察二月兰一代杂交种子的细胞分裂。
In the past years, development and application of commercial F1 hybrid rice have increased yields.
杂交水稻的开发和应用，极大地提高了水稻产量。
As a result, the ISSR marker technique can be used to carry out F1 hybrid identification and study the genetic relationship of tree peony cultivars.
研究结果表明，ISSR标记技术可以用来研究牡丹的杂交f 1代的鉴定以及品种间遗传与演化关系。
The somatic cell chromosomes in F1 hybrid plants indicated that good genes of oats can be introduced into the bread wheat to enrich the germ plasm resources of the wheat.
小麦与六倍体燕麦杂交其F1杂种植株体细胞染色体不完全排除，表明可以将燕麦优良基因导入小麦，以拓宽小麦的种质资源。
With BMPR-IB gene as candidate gene, its polymorphism distribution in Suffolk sheep, small-tail Han sheep and their F1 hybrid germination were detected by using the method of PCR-RFLP.
以BMPR - IB基因作为候选基因，采用PCR - RFLP方法检测其在萨福克羊、小尾寒羊及萨寒f 1代杂交羊中的多态性分布，分析其与产羔数的相关性。
The main causes resulting in poor anther dehiscence in hybrid F1 were different with the kind and the number of heterozygous pollen sterility loci.
杂种f 1花药不开裂的原因随其所含的杂合花粉不育基因座位种类和数目不同而异。
Hybrid F1 from Indica crossed with Japoniac as well as Photoperiod and Temperature Sensitive Genic Male-Serile(PTGMS) rice lines were the hot materials used in anther culture in recent years.
近年来对籼粳交F1和光温敏核不育系的花药培养成为研究热点，其花培后代因所用材料不同而不同。
The study on the growing characters of parents and hybrid F1 showed there were significant difference (P<0.05).
对亲本及杂交获得的F_1生长特性研究表明，亲本及F_1的生长特性存在着显著差异（P<0.05）。
The study on the growing characters of parents and hybrid F1 showed there were significant difference (P<0.05).
对亲本及杂交获得的F_1生长特性研究表明，亲本及F_1的生长特性存在着显著差异（P<0.05）。
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