EI-Sayed,, E., El-Shaarawy, G. (2006). GENETICAL STUDIES ON YIELD AND SOME AGRONOMIC CHARACTERS IN SOME BREAD WHEAT (Triticum aestivum, L.) CROSSES. Journal of Plant Production, 31(8), 4901-4914. doi: 10.21608/jpp.2006.236082
E. A. M. EI-Sayed,; G. A. El-Shaarawy. "GENETICAL STUDIES ON YIELD AND SOME AGRONOMIC CHARACTERS IN SOME BREAD WHEAT (Triticum aestivum, L.) CROSSES". Journal of Plant Production, 31, 8, 2006, 4901-4914. doi: 10.21608/jpp.2006.236082
EI-Sayed,, E., El-Shaarawy, G. (2006). 'GENETICAL STUDIES ON YIELD AND SOME AGRONOMIC CHARACTERS IN SOME BREAD WHEAT (Triticum aestivum, L.) CROSSES', Journal of Plant Production, 31(8), pp. 4901-4914. doi: 10.21608/jpp.2006.236082
EI-Sayed,, E., El-Shaarawy, G. GENETICAL STUDIES ON YIELD AND SOME AGRONOMIC CHARACTERS IN SOME BREAD WHEAT (Triticum aestivum, L.) CROSSES. Journal of Plant Production, 2006; 31(8): 4901-4914. doi: 10.21608/jpp.2006.236082
GENETICAL STUDIES ON YIELD AND SOME AGRONOMIC CHARACTERS IN SOME BREAD WHEAT (Triticum aestivum, L.) CROSSES
National Wheat Research Program, Field Crops Research Institute, Agricultural Research Center, Egypt
Abstract
Parents (P1&P2), F1,F2 Bc1 and Bcz of three bread wheat (Triticum aestivum, L.)
crosses IRENA i PBW343, lRENA f GEMMEIZA 9 and Gemmeiza 9 f SIDS Y were
grown during the three successive seasons, 200312004, 20049005 and 2005i2006 at
the experimental farm of El-Gemmeiza Agric. Res Station, ARC, Egypt. The non-
allelic interaction, scaling tests {A,B,C and D) coupled with six types of gene action
were estimated in addition to determining the adequacy of genetic model controlling
the genetic system of the inheritance of some economic traits. Heading date, maturity
date, plant height, number ofspikesiplant, number of kernelsispike, 100 kernel weight
and grain yieldipiant were studied.
Analysis of variance indicated significant differences among the studied
generations for all studied traits. Results indicated the presence of non-allelic
interaction for the significant values in all traits and crosses except few casses in
which the values did not reach the significant levels. In the six parameters model, the
additive component (a) as well as dominance component (d) were significant In most
casses. Additive x additive (aa) was significant in all casses except heading date and
number of spikesiplant in the second cross (IRENAJGEMMEIZA 9) and number of
spikesiplant and grain yieldiplant in the third cross Additive x dominance (ad)
component was insignificant in the second cross (lRENAIGEMMEIZA 9) and third
cross (GEMMEIZA QISIDSI’) for number of spikesfplant and 100 kernel weight. Also,
dominance x dominance (dd) was significant for all traits In all crosses except number
of spikesiplant for second cross.
Significant positive or negative heterosis values based on better parents values
were obtained for all crosses and traits except in case of maturity date for the second
cross. All crosses showed significant inbreeding depression except heading date in
the first cross {IRENAJPBW 343). High heritability estimates in broad sense were
observed for all studied traits for all crosses. Narrow sense heritability ranged from
13.89% to 66.34% for heading date in first and third cross, respectively. High genetic
advance was associated with high heritability estimates for 100 kernel weight and
grain yieldfplant. Moderate to low genetic advance were detected for other traits in the
three crosses.
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