水稻完成了一定的营养生长期后。即开始转入幼穗形成的生殖生长期，水稻的幼穗分化有着内在的规律性，了解幼穗发育和进程，可以有效地确定鱼苗的秧龄，指导稻田的肥水管理，达到高产稳产。
The endogenous hormone contents of different explants (anther, young panicle, young embryo and mature embryo) and calli with different culture capabilities were analyzed by means of HPLC.
利用HPLC法对愈伤组织诱导率和绿苗分化率有差异的几个水稻品种的不同外植体(花药、幼穗、幼胚和成熟胚)及其愈伤组织的内源激素含量进行测定分析。
参考来源 - 内源激素对水稻不同外植体培养力的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
野牛草组织培养的外植体有幼苗片段、叶基、雄花幼穗和成熟胚等。
In Buffallograss tissue culture, seedling segment, leaf base, mature embryo and immature male inflorescences can be used as explant.
在小麦的抽穗期又对其幼穗进行了超微弱发光与各种抗氧化物酶活性的测定。
We also determined ultraweak luminescence and all kinds of antioxidase activity of young panicles in the heading stage.
用长1厘米以上和长0.1厘米的幼穗高体培养，其愈伤组织主要是分化根；
Roots were mainly differentiated from the callus of inflorescences while they were 0.1cm and over 1.0cm in length.
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