| 香梨杂种后代花粉发育类型及其花药的解剖学研究 |
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| 引用本文： | 何天明,吴玉霞.香梨杂种后代花粉发育类型及其花药的解剖学研究[J].西北植物学报,2011,31(11):2231-2234. |
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| 作者姓名： | 何天明 吴玉霞 |
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| 作者单位： | 新疆农业大学林学与园艺学院,乌鲁木齐,830052 |
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| 基金项目： | 林业公益性行业科研专项(201004085); 新疆农业大学果树学自治区重点学科建设项目(200707) |
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| 摘 要： | 对4个组合35个香梨F1代单株的花粉发育状况进行了考察,并结合花粉量调查对F1代群体的典型单株进行了花药解剖研究。结果表明:(1)香梨杂种后代的花粉发育类型大致可分为3种类型,即正常发育型、少粒空壳型和完全败育型,其中雄性不育类型(少粒空壳型和完全败育型)占到整个杂交后代株系的42.8%。(2)花药解剖观察显示导致花粉空粒化进而完全解体的主要原因是药壁组织的异常发育。推测梨的雄性不育性可能受1对纯合的隐性基因控制,人为杂交导致的基因重组使隐性基因纯合后在杂交后代中高频率表达;同时发现,其花粉发育也受环境影响,树体的营养状况可影响花粉的发育进程。
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| 关 键 词： | 香梨 花粉量 雄性不育 解剖学 |
Pollen Development Types and Anther Anatonomy of 'Xiangli '(Pyrus breschneideri Rehd.) Hybrids |
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| HE Tian-ming,WU Yu-xia.Pollen Development Types and Anther Anatonomy of 'Xiangli '(Pyrus breschneideri Rehd.) Hybrids[J].Acta Botanica Boreali-Occidentalia Sinica,2011,31(11):2231-2234. |
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| Authors: | HE Tian-ming WU Yu-xia |
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| Institution: | HE Tian-ming,WU Yu-xia(College of Forestry and &Horticure,Xinjiang Agricultural University,Urumqi 830052,China) |
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| Abstract: | The anther development of 35 F1 hybrid seedings from 4 crosses of 'Xiangli'(Pyrus breschneideri Rehd.) was studied by genetic analysis.Combining with investigation of pollen mass,anatomical observation was conducted in the 12 F1 seedings.The results showed that:(1)there were three types of pollen development:normal,less pollens in empty sac and abortion.Higher rate of male sterile individuals(42.8%) was found in the cross progeny while the parents were male fertile.(2)The developmental anatomical observatio... |
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| Keywords: | \'Xiangli\'(Pyrus breschneideri Rehd ) pollen mass male-sterile:anatonomy |
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