| 摘要: |
| 调查了564份水稻材料的柱头外露率,测量了其中部分材料的外露柱头长度和宽度。19份野生稻柱头都外露,其中17份外露率高,最高为100%,外露柱头长,最长达2.6mm,表明柱头外露是稻属的一种原始性状。中、高纬地区的粳稻育成品种中,柱头全不外露的较多,有些柱头虽外露,但外露率低,外露的柱头短。我国中、低纬地区的早籼也是这样。云南的地方品种中柱头外露的多,而且外露率高、外露柱头长。云南地方品种的这种原始性状,看来也可作为云南是稻种起源中心之一的旁证。 |
| 关键词: 高纬地区 地方品种 柱头外露率 野生稻 性状 育成品种 云南 水稻 柱头长度 不同类型 |
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| Abstract: |
| The percentage of stigma exertion was studied in 564 rice cultivars, and some of their length of the exserted part of the stigma after anthesis was measured.A high stigma exertion percentage was found in all 17 wild rice allies.The exserted part of their stigma was qu- ite long,and the longest of them was 2.6mm.Thus stigma exertion suggests a primitive character in rice. Most of the searched varieties of subspecies Keng from middle and high latitude flowered with nonexserted stigma,only in some of them low ... |
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