Protonema (pl. protonemata) The young bryophyte gametophyte that develops following spore germination.
苔藓植物中直由孢
发形成的结构称为原丝体。
Protonema (pl. protonemata) The young bryophyte gametophyte that develops following spore germination.
苔藓植物中直由孢
发形成的结构称为原丝体。
For larger sites, seed can be applied with a drill seeder or hydroseeder.
苗床需要最小翻耕,这样以保持杂草的
发到最低限度。
The result showed that exogenous GA3 promoted the seed germination of Salicornia Bigelovii Torr under salt stress.
外源GA3促进了盐胁迫条件下北美海蓬发.
On germination, the zygospore undergoes meiosis to produce haploid cells that give rise to a new thallus.
在发期,
合孢
经历减数分裂形成单倍体细胞再产生新的植物体。
The effects of different concentrations of arsenic on spore germination and rhizoid and prothallium growth of Pteris vittata under aseptic condition were studied.
研究无菌条件下同浓度砷对蜈蚣草的孢
发、假根和原叶体生长发育的影响。
Results showed that germination percentage of urediospore, uredium number and sporulation of challenge inoculation race were reduced after inoculation with weak virulent race.
试验结果表明,弱小诱导
以降低挑战
菌系的孢
发率、孢
堆数量、产孢量。
It is speculated that meiosis occurs during the time period from these formation of the conchospore to the first cell division of it.
并对减数分裂这一遗传现象进行了重新认识,提出紫菜减数分裂能发生在壳孢
形成至壳孢
发的第一次细胞分裂时期。
That means no more expensive day care for their sons at the exclusive Chapman Academy, run by the harsh taskmistress Miss Gwyneth Harridan (Anjelica Huston).
突然之间他发了一个念头:既然他和费尔
以很好的照顾自己的孩
,那么再添几个孩
也无所谓吧!
Treatments had been carried out for germination of water dropwort, The results indicated that water dropwort seeds have a low germination percentage and dormancy characteristic.
摘要通过对水芹的
发试验及对水芹
进行多
处理试验,结果表明:水芹
发芽率低,存在着休眠。
A control program might involve early preplant tillage to encourage germination of the weed seeds, followed by shallow tillage prior to planting to kill the emerged weeds.
这样,在耕地前想办法促使杂草发,随后在播
前浅耕将其杀灭。
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