Document Type : Original research
10.12816/ejpb.2019.256679
Abstract
Two field experiments were carried out at Giza Agric. Res. Stan, during 2017/2018 and 2018/2019 reasons to evaluate ten flax genotypes concerning yield, yield components, technological traits, genetic parameters, phenotypic correlation and anatomical studies, either in flax stems or in seeds. Results obtained can be summarize as follows: Analysis of variance revealed that the flax cultivar Giza 10 ranked first concerning plant height, technical length, fiber yield /plant as well as per faddan, long fiber% and fiber fineness characters. Meanwhile, the newly flax cultivars Giza 11 and Giza 12 achieved maximum values for number of capsules/plant as well as per faddan, oil yield/faddan and oil percentage. Phenotypic and genotypic variances were higher for fiber fineness, capsules set%, plant height, number of capsules/plant, seed index, seed yield/plant and technical length characters. Environmental variance promote low estimate for most traits except plant height and technical length which recorded slight increase. Estimates of either phenotypic or genotypic coefficient of variation (P.C.V. and G.C.V.) had high values for seed yield/ plant, seed index, number of capsules/ plant, long fiber%, capsule set%, upper branching zone length, technical length and plant height. Heritability in broad sense recorded high estimates for all studied characters except number of seeds/ capsule and upper branching zone length. Moreover, the estimates of genetic advance expected from selection were high for most of studied characters. Correlation coefficient (r) values were positive and highly significant between plant height and technical length and also between number of upper branches, and each of straw yield/ plant and straw yield/faddan, capsule set %, seed index and oil yield/ fad. Moreover, positive highly significant correlation effect was found between number of capsules/ plant and each of capsule set%, seed index, seed yield/ plant, seed yield/faddan and oil yield/ faddan. Anatomical manifestation for flax stems indicated that the cultivar Giza 10 gave the maximum fiber area/ cross section and fiber index, followed by Giza 9 and Sakha 3. Seeds of the newly flax cultivar Giza 11 and Giza 12 recorded the greatest cotyledons area and cotyledons as a percentage per the corresponding total cross section area of flax seeds. Flax variety Sakha 5 ranked third in this criterion.
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