GENOTYPIC STABILITY FOR EGYPTIAN COTTON VARIETIES UNDER SOIL SALINITY LEVELS | ||
| Egyptian Journal of Agricultural Research | ||
| Article 16, Volume 79, Issue 4, October 2001, Pages 1467-1483 PDF (5.27 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.2001.320911 | ||
| Author | ||
| ABDEL-MOTY M. ZEINA | ||
| Cotton Research Institute, Agricultural Research Centre, Giza, Egypt | ||
| Abstract | ||
| High productivity and stability of performance over environment are two desired features in cotton cultivars. The objective of the present investigation was to determine genotypic stability for Egyptian cotton varieties under soil salinity levels. Eighteen Egyptian cotton varieties and promising hybrids were grown in a randomized complete block design with four replication in each of the three levels of soil salinity (EC = 8.1, 12.2 and 14.8 mmhos/cm) and control (3.4 mmhos/cm) in two seasons 1998 and 1999 at EI-Serw Agric. Experimental Station. Nine traits, including yield and its components and fiber quality were studied. All traits showed highly significant mean squares for varieties, environments and variety x environment interaction. Average genotypic stability was recorded for seed and lint cotton yield for Giza 88, Giza 85 Giza 86, Giza 89, Giza 80 and Ashmoni T./Giza 83; lint percentage and boll weight for Giza 45, Giza 76, Giza 88, Giza 83 R, Bahtim 105/Giza 67/Giza 72/ Delecro (white type) and Ashmoni T./Giza 83, seed index for Giza 85, Giza 75, Giza 89, Giza 83 R, Bahtim 105/Giza 67/Giza 72/Deleer° (Brown type) and Giza 89/Giza 86; Pressley index for most varieties; Micronaire reading and fiber length for Giza 45, Giza 76, Giza 75, Giza 89 and Bahtim 105/Giza 67/Giza 72/Delecro/Brown). The best three varieties were Giza 88, Giza 85 and Giza 89 which were stable for yield and yield components and highly productive. This method proved to be useful in cotton breeding programs and in regional and national cultivar testing to indentify high yielding and stable genotypes. | ||
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