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- Anther shape was changed and the number of pollen grains per anther was reduced, but grains could be stained with aceto-carmine. 转基因烟草的花药形状有较大的变异,早期的每个花药中花粉数明显减少,但这些花粉可被醋酸一洋红染色。
- Male sterility of pear cultivars of Niitaka, Atago and Housui (CK) and the features of their anther were examined, and the pollen grains per anther and pollen germination rates were investigated. 摘要为研究梨雄性不育表现和细胞学特征,观察分析了新高、爱宕和丰水(对照)梨花器官特征、花粉数量和育性,比较了花药和小孢子发育过程的细胞学特征。
- Pollen grains per anther 花粉量
- The EPA estimates that the insects face no observable harm when consuming milkweed leaves laden with up to 150 corn pollen grains per square centimeter of leaf surface. 环保署估计,即使马利筋叶片上每平方公分有高达150颗的玉米花粉,昆虫食用后也没有明显的危害。
- A microscopic fossil, as of a pollen grain or unicellular organism. 微体化石一种微小的化石,如花粉粒或单细胞有机体的化石
- Abstract Within the rice anther, meiosis of the pollen mother cell produces microspores, which further develop into pollen grains. 摘要 水稻的小孢子母细胞在花粉囊中进行减数分裂产生小孢子, 小孢子进一步发育成花粉粒。
- The innermost wall of a spore or pollen grain. 内壁孢子或花粉粒最深处的壁
- Both the pollen grains and the gynoecia are active. 花粉粒和雌蕊都具有活力。
- The pollen grains still to keep tetrahedral form. 小孢子四分体为四面体型。
- Pollen grains triporate, exine reticulate. 花粉粒三孔,外壁网状。
- Pollen grains prolate, semicircular in polar view. 花粉粒长球形,半圆的在极面观。
- Pollen grains prolate, smooth, not reticulate. 花粉粒长球形,平滑,不为网状。
- Stamens included size of anther,pollen number of p er anther,size,shape and viability of pollen grain. 雄蕊检测包括花药大小,单花药花粉量,花粉粒形状、大小和生活力。
- What is the yield of grain per mu here? 这里的粮食亩产是多少?
- The results showed that the anther of Niitaka and Atago was smaller and had few pollen grains, thus resulting in the formation of sterile empty pollen sacs. 结果表明,新高、爱宕花药较小,花药内花粉粒数量很少、且活力低,表现出雄性不育的空囊花药。
- Pollen grain trilobate in polar view. 花粉粒三裂在极面观。
- Pollen grain semiangular in polar view. 花粉粒半具角在极面观。
- The results from the pollen densitorneters indicate the number of pollen grains sucked into a device per square millimetre of the aperture. 孢子接收器有一装置,可以表明每一平方毫米吸入的花粉粒数。
- Fibrous thickenings are formed in the cells of the endothecium.In staminate flowers, the septum separating anther locules was cleaved and the stomium was degenerated to release the pollen grains. 在雄花,紧邻二个花药腔之隔膜细胞瓦解、唇细胞裂开,药隔组织分开,花粉粒即可释出;
- The pollen grains were spherical or oblate, with irregul... 结论:上述显微特征可作为菱叶红景天的鉴别依据。