Data were recorded on ten guarded plants for earliness, growth habit, cotton yield, and fiber traits i.e., first fruiting nods (FFN), number of fruiting branches per plant (No. FB/P), plant height (PH), seed cotton yield tone/hectar (SCY.t/ha), lint cotton yield tone/ hectar (LCY.t /ha), seed index (SI) in gram, number of open bolls per fruiting branches (No.B/FB), lint index (LI) and number of seeds/boll (No. S/B).
Fiber parameters were recorded in the laboratories of the Cotton Technology Research Division, Cotton Research Institute, Agriculture Research Center, Egypt, in accordance with the standard method of the American Society for Testing Materials Designation (American Society for Testing Materials, 1998) at 21 °C ± 1 °C and 65% ± 2% relative humidity. Micronaire reading (MIC) was used to express fiber fineness. Fiber strength (FS) was measured by using a Pressley instrument at zero gauge (g/tex). Fiber strength is closely related to yarn and fabric strength and spinning efficiency. Fiber length at 2.5% (FL, mm) was estimated as the space in mm spanned by 2.5% of the fibers as recorded on a digital fibro graph. The uniformity ratio (UR%) was calculated in accordance with the following equation:
Fiber parameters were recorded in the laboratories of the Cotton Technology Research Division, Cotton Research Institute, Agriculture Research Center, Egypt, in accordance with the standard method of the American Society for Testing Materials Designation (American Society for Testing Materials, 1998) at 21 °C ± 1 °C and 65% ± 2% relative humidity. Micronaire reading (MIC) was used to express fiber fineness. Fiber strength (FS) was measured by using a Pressley instrument at zero gauge (g/tex). Fiber strength is closely related to yarn and fabric strength and spinning efficiency. Fiber length at 2.5% (FL, mm) was estimated as the space in mm spanned by 2.5% of the fibers as recorded on a digital fibro graph. The uniformity ratio (UR%) was calculated in accordance with the following equation:
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