ABO-KAIED, H., MOURAD, N., ZAHANA, A. (2002). EVALUATION OF YIELD AND STABILITY IN EARLY FLAX GENERATIONS. II. SEED YIELD AND ITS COMPONENTS. Egyptian Journal of Agricultural Research, 80(4), 1673-1690. doi: 10.21608/ejar.2002.313165
HUSSEIN M. H. ABO-KAIED; NABEL K. M. K. M. MOURAD; AFAF E. A. ZAHANA. "EVALUATION OF YIELD AND STABILITY IN EARLY FLAX GENERATIONS. II. SEED YIELD AND ITS COMPONENTS". Egyptian Journal of Agricultural Research, 80, 4, 2002, 1673-1690. doi: 10.21608/ejar.2002.313165
ABO-KAIED, H., MOURAD, N., ZAHANA, A. (2002). 'EVALUATION OF YIELD AND STABILITY IN EARLY FLAX GENERATIONS. II. SEED YIELD AND ITS COMPONENTS', Egyptian Journal of Agricultural Research, 80(4), pp. 1673-1690. doi: 10.21608/ejar.2002.313165
ABO-KAIED, H., MOURAD, N., ZAHANA, A. EVALUATION OF YIELD AND STABILITY IN EARLY FLAX GENERATIONS. II. SEED YIELD AND ITS COMPONENTS. Egyptian Journal of Agricultural Research, 2002; 80(4): 1673-1690. doi: 10.21608/ejar.2002.313165
EVALUATION OF YIELD AND STABILITY IN EARLY FLAX GENERATIONS. II. SEED YIELD AND ITS COMPONENTS
Field Crops Research Institute, Agricultural Research Center, Giza, Egypt
Abstract
Combining ability and stability performance for seed yield/plant and its component traits viz., capsules/plant, seeds/capsule and 1000-seed weight were studied in the F3 and F4 generations of 36 diallel crosses involving nine flax parents over three diverse environments. GCA/SCA mean squares indicated that both additive and non- additive gene effects governed the inheritance of seed yield/plant and its three component traits. However, additive was more important than non-additive genetic variance in the genetic expression of 1000-seed weight, seed yield/plant and capsules number/plant. On the other hand, non- additive was more important than additive genetic variance in the inheritance of seeds/capsule, Significant GCA x E interaction indicated that the additive effects were not stable over environments, hence more than one test environment is required to obtain reliable information for seed yield/plant and its components_ On the contrary. SCA x E interaction was not significant for seed yield /plant and seeds/capsule indicating that the non-additive effects governing these two characters were less distorted by environmental fluctuations. Giza-8 and 9.2419/1 were good combiners for seed yield/plant, capsules/plant and 1000-seed weight, whereas Ariane-R3 was good combiner for seeds/capsule_ Nine out of the 36 studied crosses showed positive and significant SCA effects for seed yield/plant or its three components over environments in both F3 and F4 generations. Two out of these nine superior crosses, Giza 8 x Ariane-R3 and 82419/1 x Ariane-R3 involved high x high general combining parents for seed yield /plant and one or more of its components. Moreover, the cross 9.2419/1x 5.148/6/1 showed positive and significant SCA effects for seed yield /plant plus two of its components 1000-seed weight and seeds /capsule. Stability analysis showed that the five crosses, (Giza 7 x Giza 8, Giza 7 x S.2419/1, Giza 8 x 9.2419/ 1, Giza 8 x S.148/6/1 and 9.2419/1 x S.148/6/1) were consistent for seed yield /plant and its two important components, 1000-seed weight and capsules/plant in F3 and F4 generations. Hence these five crosses were considered adapted and may be useful as potential breeding material for developing crosses with stable seed yield /plant in later generations. It concluded that early generation for yield and stability performance would provide reliable information for improving seed yield in flax.
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