Zaki,, K., Afiah, S. (2002). GENETIC ANALYSIS OF YIELD, ITS COMPONENTS AND NET BLOTCH DISEASE RESJSTANC IN BARLEY UNDER STRESS CONDITIONS: 2- F4 SALT AND DROUGHT TOLERANT LINES. Journal of Plant Production, 27(9), 5823-5833. doi: 10.21608/jpp.2002.256610
K. I. Zaki,; S. A. N. Afiah. "GENETIC ANALYSIS OF YIELD, ITS COMPONENTS AND NET BLOTCH DISEASE RESJSTANC IN BARLEY UNDER STRESS CONDITIONS: 2- F4 SALT AND DROUGHT TOLERANT LINES". Journal of Plant Production, 27, 9, 2002, 5823-5833. doi: 10.21608/jpp.2002.256610
Zaki,, K., Afiah, S. (2002). 'GENETIC ANALYSIS OF YIELD, ITS COMPONENTS AND NET BLOTCH DISEASE RESJSTANC IN BARLEY UNDER STRESS CONDITIONS: 2- F4 SALT AND DROUGHT TOLERANT LINES', Journal of Plant Production, 27(9), pp. 5823-5833. doi: 10.21608/jpp.2002.256610
Zaki,, K., Afiah, S. GENETIC ANALYSIS OF YIELD, ITS COMPONENTS AND NET BLOTCH DISEASE RESJSTANC IN BARLEY UNDER STRESS CONDITIONS: 2- F4 SALT AND DROUGHT TOLERANT LINES. Journal of Plant Production, 2002; 27(9): 5823-5833. doi: 10.21608/jpp.2002.256610
GENETIC ANALYSIS OF YIELD, ITS COMPONENTS AND NET BLOTCH DISEASE RESJSTANC IN BARLEY UNDER STRESS CONDITIONS: 2- F4 SALT AND DROUGHT TOLERANT LINES
1Plant Production Dept., Desert Research Center, EI-Matareya, Cairo Egypt.
2Plant Genetic Resources Cept., Desert Research Center, EI-Matareya, Cairo Egypt.
Abstract
Twelve F~ lines of barley were selected through !he crop breeding program of desert research center under saline and rainted conditions. These elite newly bred lines were chosen according to their superiority in abiotic (saline or drought) and biotic (net blotcn disease) resistance. Signiflcant differences among all genotypes were detected in respect to grain yield, 115 main components and nel blotch severity of infection.
Under Ras suder saline conditions, F~ line No.1 9ave the highest number of spikes I plant (3.8) and il was bener than the check variety (Giza 123). Line (10) (ollowed by line (9) and line (12) were the superior genotypes in 9rain yield I plant and yielded more than the check variety (Giza 123) by 70.96, 69.87 and 65.94 %, respectively. This superiority in yield potential was negatively correlated with severity of net blotch Infection Posilive and significant correlation coefflcients were detected between grain yield I plant and each of number of spikes I plant and 100 grain weight which revealed that selection for each or both yi~ components would be accompanied by high yielding ability under similar saline environments.
One the other hand; under Maryout rainfed conditions, the three F~ selected lines No. 12, 10 and 9 gave the highest grain yield J plant. These three lines out yielded the recommended variety (Giza 126), by 73.48, 63.64 and 62.88 % respectively. This superiority in yield potentiality mainly attributed to number of spIkes I plant, 100-grain weight and tolerance to net blotch disease. Such elite newly bred lines had p" in its genetic background which was developed for drought tolerance under rainted Syrian conditions and selected as a hightv resistant genotype to net blotch disease under Egyptian conditions. This finding may explain the importance of the choice of parents in breading program.
Small differences between phenotypic and genotypic coefficients of variability for all trails were recorded except severity of net blotch disease infection suggesting the relative importance of genetic variance lor such traits under both saline and rainfall conditions. Accordingly, broad sense heritability estimates were relatively high and ranging from 81.5 to 96.1 % and from 76.3 to 94.5 % under saline and rainfed conditions, respectively.
View on SCiNiTO
Top