Early archegonial development is already evident two weeks after pollination. 颈卵器的早期发育在授粉后两周内就业已明显。
But it says there were enough honey bees to provide all the agricultural pollination needed last year. 但是,去年有足够的蜜蜂为美国完成所有需要进行的农业授粉工作。
A Study on the Technique of Apple Pollination by Introducing Wild Wall Bee 引进野生壁蜂进行苹果授粉的技术研究
Study on Biological Characteristics and Flowering Pollination Technology of Dendrobium candidum 铁皮石斛的生物学特性与开花授粉技术研究
Through analysis of open pollination progeny test in clonal seed orchard of Pinus koraiensis, some ( parameters) have been obtained, such as hereditability and genetic gain etc. 通过对红松无性系种子园自由授粉子代进行测定分析,得出遗传力、遗传增益等参数,为红松遗传改良提供理论依据。
Relationship Between Protective Enzymes, Endogenous Hormones in Pistil and Pollination Compatibility of Lilium 百合授粉亲和性与雌蕊中保护酶和激素的关系
Planting trees in groups rather than long thin lines helps pollination. 成批密植而不是成长行地稀植有助于树木授粉。
The study on pseudogamy property of wheat parthenogenesis is conducted by means of delaying pollination and observing embryo sac with microscope. 采用延迟授粉和胚胎学显微观察的方法,研究了黑麦和六倍体小黑麦花粉诱导小麦孤雌生殖的假受精特性。
Effects of pollination tree and pollen vitality on fruiting rate and seed-setting rate of Castanea mollissima 授粉树与花粉活力对板栗结实率和坐果率的影响
Study on Pollination Biology among Some Apricot Cultivars and New Apricot Lines Selection; Autogamy Self-fertilization in plants. 部分杏品种授粉生物学及新品系选育的研究自花授粉:植物中的自体受精现象。
Taken together, these results provided further clues to elucidate the molecular mechanisms of pollination and fertilization in rice. 总之,这些研究结果为我们阐明水稻传粉受精的分子机制提供了重要线索。
Effects of Different Stage Pollens on Pollination and Seed Quality of Flue-cured Tobacco 不同时期花粉授粉对烤烟授粉效果和种子质量的影响
One of the chief contributions of insects is their role in the pollination of cultivated plants. 昆虫的主要贡献之一在于为栽培植物传播花粉所起的作用。
Studies on the Breeding System and Pollination Biology of China Species& Pugionium cornutum 中国特有种&沙芥繁育系统和传粉生物学研究
Camellia japonica Pollen Vigor and Determination of Artificial Pollination Research 耐冬山茶(Camelliajaponica)花粉活力测定及人工授粉研究
Hydrophily Pollination in which water carries the pollen from anther to stigma. 水媒:是以水为媒介将花粉传递到植物柱头的一种传粉方式。
Unlike honeybee Apis mellifera, bumblebee Bombus lucorum have different pollination behavior on greenhouse tomato. 在番茄温室内,熊蜂和蜜蜂的授粉习性不同。
Studies conducted locally and abroad show that honeybee pollination increases crop yield by up to40 percent. 在本地及海外进行的研究显示高达百分之四十的蜜蜂授粉提高作物产量的影响。
Most flowering plants need pollination to reproduce. 大部分开花植物都需要传播花粉这个过程来繁殖。
He also describedb the process of pollination and showed that the stamens were the male organs and that the stigma and style were the female organs of a plant. 他还研究了传粉的过程并发现雄蕊是植物的雄性生殖器官,而花柱和柱头是植物的雌性生殖器官。
Pollination for watermelon through bee is the key measure to increase yield and quality. 蜜蜂为西瓜授粉是增加其产量与质量的关键措施。
The experiments of plum pollen variation of vitality during hoarding and effects on field pollination have been performed. 对李花粉贮藏期间生活力变化及对田间授粉效果的影响进行了试验。
In the case of the common fig the flowers are all female and need no pollination. 在本案的共同图花朵都是女性,不需要授粉。
The difference should be discernible in the time of flowering and pollination in orchards. 在种子园的开花和传粉时,可以看出这一差异。
Assessment of Germplasm Resources and the Study on Pollination Biology of Paeonia Lactiflora 白芍种质资源的初步评价及传粉生物学研究
Such differences promote pollination between groups. 这些差别促进了两组间的授粉作用。
Preliminary analysis of two candidate genes in pollination and fertilization were conducted. 同时,我们对两个可能参与传粉受精的基因进行了初步的功能研究。
In 21 to 24 hours after pollination, most of the female nuclei fuse with the male nuclei. 授粉后21至24小时,大部分雌、雄性核发生融合。
Control of pollination and crossing. 授粉之控制及杂交。
Several Plant Growth Regulators on Increasing Pollination Rates of Camellia oleifera 几种植物生长调节剂对油茶花期授粉率的影响