| 基于形态特性的豌豆(Pisum sativum)F_1,F_2和F_3代遗传研究和高产抗白粉病品系的选育(英文) |
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| 作者姓名： | Nisar M. Ghafoor A. |
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| 作者单位： | Nisar M.(Department of Botany,University of Malakand,NWFP,Pakistan);Ghafoor A.(Institute of Agri-biotechnology and Genetic Resources,National Agricultural Research Centre Islamabad,Pakistan)
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| 摘 要： | 本研究的目的是确定豌豆F1和F2代的6个相对性状的遗传和连锁关系,并在F3代中选择高产抗白粉病株系.选择两个近等基因系Falloner和11760-3ER进行杂交,得到的F2代的性状分离比均为3:1,这符合X2(p＞0.07)适合度检测,表明是单基因遗传.花色和种子颜色与花青素关联的似然比分别为44.31和34.91,每个叶片中小叶数目和卷须类型关联的似然比为33.21.这三个关联的质量性状在P＜0.00具有非常显著的相关性,但与白粉病性状均不相关联.选择F3代的4个与产量密切相关的数量性状进行研究,发现总荚重和种荚比分别具有49.77%和20.01%的最高变异系数.相关性研究发现,总荚重与籽粒重量、荚宽、荚长和种荚比呈显著正相关.荚长与种荚比呈显著正相关.根据数量性状值和白粉病抗性表现,选择GN070140-2,GN070143-1和GN070140-0三个株系作为以后的栽培品种.
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| 关 键 词： | 豌豆 遗传 er-1基因 分析 3个新颖株系 |
Inher itance Studies of Pisum sativum F_1, F_2 and F_3 Generation Based on Morphological Traits and Selection of High Yielding Powdery Mildew Resistant Lines |
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| Nisar M.,Ghafoor A..Inher itance Studies of Pisum sativum F_1, F_2 and F_3 Generation Based on Morphological Traits and Selection of High Yielding Powdery Mildew Resistant Lines[J].Molecular Plant Breeding,2009,7(2). |
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| Authors: | Nisar M Ghafoor A |
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| Institution: | 1. Department of Botany,University of Malakand,NWFP,Pakistan
2. Institute of Agri-biotechnology and Genetic Resources,National Agricultural Research Centre Islamabad,Pakistan |
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| Abstract: | Aim of this study was to determine the inheritance and linkage of six contrasting traits in Pisum sativum F1 and F2 generation,and to select high yielding powdery mildew resistant lines in F3 generation.Two isogenic lines Falloner and 11760-3ER were selected crossed.All the traits in F2 segregants,showed 3:1 ratio,which was fit for goodness by x2(p＞0.07)method and indicates monogenic inheritance.Anthocyanin pigmentation linked with flower colour with likely hood ratio 44.31 and with seed colour at 34.91.While tendril type linked with numbet of leaflet per leaf at likelyhood ratio 33.21.All the three linked qualitative traits were highly significantly correlated at P＜0.00.None of the qualitative trait was linked to powdery mildew disease.In F3 generation four yields contributing quantitative traits were studied.Among the quantitative traits,total pod weight(49.77%)and number of seeds/pod(20.01%)showed maximum level of coefficient of variation.In correlation studies,total pod weight pods was high significantly positively correlated with seed weight,pod width,pod length,number of seed/pod.Similarly,pod length Was highly positively significantly correlated with number of seeds/pod.Based on yield contributing traits and powdery mildew resistance three lines GN070140-2,GN070143-1 GN070140-0 Was selected,which could use as cultivar in future. |
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| Keywords: | Peas Inheritance er-1 gene Analysis Novel three lines |
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