Genetic variability and correlation studies in various genotypes of watermelon [Citrullus lanatus (Thunb.) Mansf.]

Abstract

The study was conducted to determine genetic variability and correlation involving 21 watermelon genotypes in a randomized block design with three replications. A considerable amount of variability was observed for qualitative and quantitative traits. Maximum phenotypic and genotypic variability was recorded for the seediness, followed by pericarp thickness and fruit weight. Most of the characters except cotyledon size, leaf blade ratio, emergence of first male flower, emergence of first female flower, days taken to fruit maturity, blooming period and seed length exhibited high estimates of heritability coupled with the high estimates of genetic advance. Number of fruits per vine had significant genotypic and phenotypic positive correlation with the traits leaf blade length, internodal length, number of primary branches and number of secondary branches. Based on yield and yield contributing characters, the genotypes viz., VRW-14, VRW-12, VRW- 20 and VRW-17 were found promising for future improvement programme.

Study on genetic variability parameters in soybean [Glycine max (L.) Merrill] genotypes

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Study of LED Radiation Effects on Insect Phototaxis Response for the Development of Light-Based Pest Trap

“…The accumulation of insecticides when metabolized can cause a plethora of ill effects to the human body development, wildlife, and vital agriculture pollinator health. In efforts to reduce reliance on these agrochemicals, several alternatives have been proposed and applied with varying levels of success, all part of a broader concept known as Integrated Pest Management [1][2][3][4][5][6]. However, these approaches have limitations in their ability to substitute insecticides role due to its broad spectrum effect.…”

Genetic characterization of citron watermelon (citrullus lanatus var. citroides [L.H. Bailey] mansf. ex greb.) and development of experimental hybrids.

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