reception
发表于 2025-3-30 11:48:55
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Hdl348
发表于 2025-3-30 15:31:13
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声明
发表于 2025-3-30 20:12:54
Homologies and Phylogeny,The structures and functions described in earlier chapters give a good idea about our present knowledge of sexual reproduction in angiosperms.
COMA
发表于 2025-3-30 23:10:11
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全部
发表于 2025-3-31 01:42:45
The Embryo,strated, in a series of publications from 1847 to 1861, that the embryo originated from a cell present in the embryo sac prior to the arrival of the pollen tube, thus vindicating Amici’s view, that the controversy came to an end .
雀斑
发表于 2025-3-31 05:06:11
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预兆好
发表于 2025-3-31 12:22:48
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合并
发表于 2025-3-31 15:16:02
Experimental Embryology,cessful efforts paved the way to finding suitable nutrient composition and optimal conditions to grow organs, tissues, and cells. Knudson (1919) cultured the root cap cells which remained viable for 70 days but did not divide. Molliard (1921) adopted a different approach. He used segments of roots a
BADGE
发表于 2025-3-31 20:38:26
https://doi.org/10.1007/978-3-322-88987-4 a designedly formed, small foramen (micropyle) in the outer coat of young leguminous seeds. He compared this foramen with the bunghole of beer and wine barrels and assumed that it functions as a passage for “aiery particles to exite the fermentation”. During germination the foramen would, in this t
表示向下
发表于 2025-3-31 23:40:34
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