ESTIMATION OF GENETIC PARAMETERS FOR YIELD AND YIELD COMPONENTS AND SOME AGRONOMIC CHARACTERS IN TWO CROSSES OF BREAD WHEAT (Tritium aestivum L.)

Aboshosha, A.A.M.; Hammad, S. M.

doi:10.21608/jacb.2009.93107

Cited by 6 publications

(10 citation statements)

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“…Meanwhile, non of A, B or C scaling tests were significant, indicating the adequacy of the three parameter model to explain the type of gene action. These results are in general agreement with those of Tammam (2005), El-Hag (2006), Abd El-Rahaman, Magda and Hammad (2009), Aboshosha and Hammad (2009), Type of gene action Cross 2 = Line 1 × Sakha 94 Cross 3 = Sakha × Gemmiza 9…”

Section: Scaling Test and Generation Mean Analysissupporting

confidence: 90%

Genetic Parameters for Some Yield and Yield Components Characters in Four Crosses of Bread Wheat Under Two Water Regime Treatments

Sultan

El-Latif²,

Abdel-Moneam

et al. 2011

Journal of Plant Production

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Six populations; P1, P2, F1, F2, BC1 and BC2 of four bread wheat crosses were used in this study to determine quantitative genetic parameters for yield and its components characters under normal and water stress treatments. The means of the six generations were recorded for plant height, spikes number plant-1 , grains number spike-1 , 100-grain weight and grain yield plant-1 in four crosses namely; Line 1 × Sakha 93, Line 1×Sakha 94 , Sakha 93×Gemmiza 9 and Sakha 94 × Gemmiza 9 generated from four diverse parents. The experiment was carried out in 2006/2007 to 2008/2009 seasons at Sakha Agric. Res. Station, ARC. The means of the four crosses significantly decreased under the water stress treatments for yield and its components characters as the effect of water stress at most cases. The T-test of differences between parents of each cross under each treatment showed highly significant values in most cases in the four studied crosses under both treatments. The results showed the importance of additive gene effects in the inheritance of plant height and spikes number plant-1 , while, additive, dominance and epistasis were the important in the inheritance of grains number spike-1 , 100-grain weight and grain yield plant-1 at most cases under both normal and water stress treatments. Moreover, additive genetic variance played the greatest and the important role in the inheritance of plant height, spikes number plant-1 and grain yield plant-1 at most cases under both water treatments. On the other hand, dominance genetic variance was the greatest and the important in the inheritance of grains number spike-1 and 100-grain weight at most cases under both water treatments. On the other side, heritability in broad sense had medium to high percentages for all studied characters at all cases under normal and water stress treatments. Meanwhile, heritability in narrow sense had moderate to high values for yield and yield components characters at most cases under both water treatments, except grains number spike-1 which had low values at most cases under both water treatments. Genetic advance under selection was low for plant height at most cases under both water treatments. While, it was high for spikes number plant-1 and grain yield plant-1 at most cases under both water treatments. Also, it was founded to be low to high for plant height, grains number spike-1 and 100-grain weight at most cases under both water treatments.

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Section: Scaling Test and Generation Mean Analysissupporting

confidence: 90%

Genetic Parameters for Some Yield and Yield Components Characters in Four Crosses of Bread Wheat Under Two Water Regime Treatments

Sultan

El-Latif²,

Abdel-Moneam

et al. 2011

Journal of Plant Production

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“…The results indicated that the parental varieties differed in their performance for all traits. These results are in agreement with those obtained by El-Hawary (2006); Aboshosha and Hammad (2009); Gebrel (2010) and Abd El-Lateef (2012).…”

Section: Mean Performancesupporting

confidence: 93%

“…The cross P 1 x P 2 was the best in the two seasons for spikes number/plant and grains number/spike. These results are in harmony with those of Shehab El-Deen (2008); Aboshosha and Hammad (2009); Gebrel (2010); Sulaiman (2011); Abd El-Lateef (2012) and . indicated the presence of true differences among these genotypes.…”

Section: Mean Performancesupporting

confidence: 87%

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Genetical Studies on Yield and its Components of Four Bread Wheat Cultivers

Zaied

El-Hady

Ramadan

et al. 2018

Journal of Agricultural Chemistry and Biotechnology

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The present investigation used four bread wheat cultivars to study some earliness, yield and its components characters. The parental cultivars produced six F 1 hybrids following 4 x 4 half Diallel crossing without reciprocal. F 1 hybrids and their parents were evaluated via combined analysis to study mean squares due to the parents and their hybrids which showed significant values for all studied traits. The parental variety P 1 was the best for earliness. However, P 4 was the best for yield and its components. The crosses P 1 x P 4 and P 2 x P 4 were the best for earliness. However, four crosses were the best for yield components. The mean squares associated with general and specific combining ability appeared significant values for all studied traits in the both seasons. Gemmeiza 9 was the good parent for earliness traits; however, Gemmeiza 10 was the best parent for yield and its components in the two seasons. The graphical analysis Wr/Vr showed significance of over dominance gene effects, as well as, significance of additive and dominance genetic variance in controlling all traits. The additive components (A) were lower than dominance for all traits in both seasons. Heritability in narrow sense was low for all traits in both seasons. The magnitude of dominance (H 1 and H 2) was significant than additive for most traits in both seasons which reflected the presences of over dominance. The environmental variance (E) showed that all traits have been greatly affected by environmental factors.

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“…In general, most of authors obtained variable estimates of heritability in narrow and broad senses although their values were close to each others because of the smaller values obtained for the dominance. In this respect, Aboshosha and Hammad (2009) indicated that the calculated quantities A, B and C of the scaling test revealed the importance of additive effect which was larger and greater than dominance effect for 100-kernel weight; grain yield/plant and plant height. Therefore, the objective of this study was directed to investigate the effect of normal and late sowing dates, on the performances of three hybrids resulted from crossing different cultivars and lines with respect to their earliness characteristics.…”

Section: Introductionmentioning

confidence: 93%

THE NATURE OF GENE ACTION AND THE PERFORMANCES OF HYBRIDS WITH RESPECT TO EARLINESS AND YIELD TRAITS UNDER NORMAL AND LATE SOWING DATES IN WHEAT (Triticum aestivum , L.).

Adl

El-Rahman

Yasin

2013

Journal of Agricultural Chemistry and Biotechnology

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This investigation was made to evaluate three bread wheat hybrids and their six populations generated from each of them under normal and late sowing dates. The three hybrids were obtained where hybrid 1 was a result of crossing (Late × Late) cultivars; hybrid 2 was a result of crossing (Early × Early) cultivars and hybrid 3 was a result of crossing (Late × Early) ones. The early parental in breed lines included: Line1, Line2 and Line3 while, the late parental ones included: Misr2 and Gemmeiza9. The two sowing dates were: normal sowing on 29 November 2011 and the late sowing on 29 December 2011. Therefore, the total genetic materials were obtained from the three hybrids included 18 genotypes which were evaluated at Sakha Agricultural Research Station Farm, Wheat Section, Egypt. Earliness traits showed that late sowing date required fewer days than normal sowing date for days to heading; days to maturity and grain filling period. This trend was present for all populations of the three hybrids. It appeared that late sowing shorten the life span of plants. Yield component characters which included: plant height; 100kernel weight and grain yield/ plant showed the advantage of hybrid 1 for plant height and grain yield/plant than the other two hybrids. These two characters showed a modest amounts of heterosis for the three hybrids. Nature of gene action which estimated from the six populations and evaluated using the scaling test analysis proposed by Mather and Jinks (1971). The results indicated the importance of additive genetic variance than dominance genetic variance one for most studied traits. These results were also supported by the results obtained from the scaling test analysis as the quantities A,B and C indicated the adequacy of the additive dominance model.

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ESTIMATION OF GENETIC PARAMETERS FOR YIELD AND YIELD COMPONENTS AND SOME AGRONOMIC CHARACTERS IN TWO CROSSES OF BREAD WHEAT (Tritium aestivum L.)

Cited by 6 publications

References 0 publications

Genetic Parameters for Some Yield and Yield Components Characters in Four Crosses of Bread Wheat Under Two Water Regime Treatments

Genetic Parameters for Some Yield and Yield Components Characters in Four Crosses of Bread Wheat Under Two Water Regime Treatments

Genetical Studies on Yield and its Components of Four Bread Wheat Cultivers

THE NATURE OF GENE ACTION AND THE PERFORMANCES OF HYBRIDS WITH RESPECT TO EARLINESS AND YIELD TRAITS UNDER NORMAL AND LATE SOWING DATES IN WHEAT (Triticum aestivum , L.).

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