| The characters of the spike differentiation of tropic maize population Mobai 962 among different generations during adapting to temperate zone |
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| DOI：10.7606/j.issn.1000-7601.2007.01.45 |
| Key Words: tropic maize population adaptability variety improvement spike differentiation |
| Author Name | Affiliation | | LI Xiang-tuo | Northwest A＆F university, Yangling,Shaanxi 712100,China | | ZHANG Xing-hua | Northwest A＆F university, Yangling,Shaanxi 712100,China | | LI Fa-min | Northwest A＆F university, Yangling,Shaanxi 712100,China | | YANG Jin-hui | Northwest A＆F university, Yangling,Shaanxi 712100,China | | MAO Jian-chang | Northwest A＆F university, Yangling,Shaanxi 712100,China |
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| Abstract: |
| In order to study the change of spike differentiation in tropic maize population during adapting to temperate,different generations of Mobai 962 and Hudan 4# were taken as materials.The result indicated that the internal of differentiation phase Ⅰ and Ⅲ in improvement generation C4 was shorten by five days and four days,respectively,compared with the process of Mobai 962 tassel development in original population C0,but the internal of differentiation phase Ⅱ and Ⅳ in C4 was four days and one day longer than C0,respectively.Compared with the process of Mobai 962 ear development in C0,the internal of phase Ⅰ, Ⅲ and Ⅳ in C4 was reduced by nine days,three days and two days,respectively,while the internal of phase both Ⅱ and Ⅴ in C4 was three days longer than C0.With increase of improvement generation,the gap of spike differentiation phase between tassel and ear of Mobai 962 would be reduced.Regardless of the internal of spike differentiation,the gap of different spike differentiation phase between tassel and ear,the improved generation C4 was more similar to Hudan 4# than original population C0 of Mobai 962. |
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