| Titles |
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English :
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combining ability and gene action for yield and yield components in flax
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Arabic :
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القدرة علي الائتلاف والفعل الجيني للمحصول ومكوناته في الكتان
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| Abstract |
This study was conducted with the objective of estimating combining ability and gene action for seed and straw yields and their components in flax. This was achieved via evaluating 15 progenies of the factorial (North Carolina) design ΙΙ consisting of five females (P1=S.2419/1/1, P2=S.282/37/8/6, P3=S.420/140/1/1, P4=S.402/21/19/10 and P5=S.2467/1) and three males (P6=Giza4, P7=Bombay, and P8=S.162/12). In2000/2001,the eight parents and their 15 F1,s and 15 F2,s progenies were evaluated. The collected data indicated that the non-additive effects were more important than additive effects for straw yield /plant and No. of basal branches /plant whereas, the additive effects were more important than non-additive effects for both of plant height and technical stem length indicating that effective selection should be possible within these F2 and subsequent generations for plant height and technical stem length. P1and P3for straw yield/plant and plant height and P8 for technical stem length exhibited significant, positive GCA effects indicating the possibility of using these parents in flax breeding for improving straw yield, plant height and technical stem length. The consistent estimates of GCA effects over generations supported this prediction .The significant positive correlation coefficients between GCA values and parental means for straw yield/plant, plant height and technical stem length indicated that selection of parental crosses in flax breeding programs could depend on their higher mean performance for these traits .One cross (P3xP8) exhibited significant positive SCA effect for each of straw yield, technical stem length and No. of basal branches/plant. This cross involved high x high general combiners for straw yield. For seed yield and its components viz: No. of capsules/plant, 1000-seed weight and No. of seeds/capsule data indicated that the non-additive effects were more important than additive effects for these traits. However, for 1000-seed weight data indicated that, both additive and non-additive effects were involved in the inheritance for this trait. P6 revealed significant positive GCA effects for seed yield, 1000-seed weight and No. of capsules/plant indicating that the use of this genotype in flax breeding programs could improve these traits. The cross P5xP6 may be recommended for improving seed yield /plant and its two important components viz: No. of capsules/plant and 1000-seed weight whereas, the cross P4x P6 may be used for improving seed yield/plant and1000-seed weight only.
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| Publication year |
2002
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| Pages |
51- 63
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| Availability location |
معهد بحوث المحاصيل الحقلية- 9 ش الجامعة – الجيزة
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| Availability number |
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| Organization Name |
Field Crops Research Institute (FCRI)
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| serial title |
المجلة المصرية لتربية النبات
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| Author(s) from ARC |
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| Agris Categories |
Agriculture - General aspects
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AGROVOC
TERMS |
Flax.
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| Publication Type |
Journal
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