植物花粉花藥培養(yǎng)ppt課件-展示頁
2025-01-14 12:10本頁面
【正文】 成。 （ 4）溫度和光照： 前期要求高溫，光照條件要求不高。大多數(shù)植物以單核后期花粉適宜花藥培養(yǎng)。 Figure Segmentation pattern of in vitro wheat pollen observed from the 1st to 14th day of anther culture. The figure shows that a uninucleated microspore may degenerate before division, (a) or may give rise, by mitosis, to normal binucleated grain presenting vegetative and generative nuclei (b). Identical nuclei are formed in low frequency (c). The first mitotic division occurs at the 4th day of culture. The normal binucleated pollen may follow the normal in situ developmental pattern forming starch and then, degenerate (d). The second mitotic division takes place at the 68th and at the 10th day of culture. In the androgeic pollen, the veg
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