Performance of Six Generations on Two Rice Crosses under Submergence Stress and Non-stress Condition

Submergence fortitude has long been respected as an important breeding objective for rain-augment lowland and predicament rice district. Despite this recognition, there has existed limited benefit in developing rice accompanying improved plunge tolerance in Africa. The present research was proposed at assessing performance of crosses under plunge stressed and non-emphasized conditions in Nigeria. Six production of the crosses were evaluated under optimum and flooded conditions in a complete randomized block design accompanying three replications. Submergence screening was acted in controlled conditions that admitted flooding at a water insight of 1.0 meter for a period of 14 days. The results told that significant dissimilarity among the creation of the two crosses evaluated. The noticed survival rate (%) in Cross I of the era ranged 'tween 0.00% - 100% while in Cross II, it ranged between 0.00% and 95.24%. The Phenotypic Coefficients of Variation (PCV) and the Genotypic Coefficient of Variation (GCV) for 100 piece weight were moderate to extreme under the two conditions. Low to moderate PCV and GCV coefficients of difference were observed for the seed width and seed length under both environments in the two crosses. High heritability (0.96% individually) and high ancestral advance as percentage of mean were recorded for the seed yield and grain pressure in the two crosses. The instability observed among the era was optimum still, advancement of the segregating generations accompanying adequate option criteria keep lead to identification of superior and fixed genotypes for farmers’ use.

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