At the meantime, rigid endosperms enwrap the embryo.

這也是其發(fā)芽困難的主要原因。

I.sanguinea and I. typhifolia have thin seed capsules and compact endosperms. The seed testa of I, lactea is thick and keratose.

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Firstly, it is found that there are many obvious differences between Acorus and Araceae. Their differences are based on many aspects which include characteristics of morphology, anatomy and epidermis of leaf, types of tapetum in anther walls , patterns of endothecial thickenings, and ways of development of endosperms, presence or absence of perisperm, components of photochemistry, and sequences of rbcL.

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The expression patterns of the two transcripts in different tissues and developing endosperms in rice were analyzed by RT-PCR.

其中OsAgpS1基因產(chǎn)生兩個(gè)轉(zhuǎn)錄本OsAgpS1a和OsAgpS1b，區(qū)別在第一個(gè)外顯子的位置不同欧美性爱精品影库。

Stable and abundant bands can be obtained with the materials of endosperms and fresh leaves.

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