Joshi, K. I.AHLAWAT, TIMUR RAMPAL2018-07-022018-07-022004http://krishikosh.egranth.ac.in/handle/1/5810056202The present investigation entitled "Line x Tester analysis for combining ability, heterosis and gene action in okra (Ahelmoschus esculentus (L.) Moench)" was undertaken at Main Vegetable Research Station, Gujarat Agricultural University, Anand during kharif 2000 and 2001. The experimental material comprising of fifteen females, five males, their 75 hybrids and standard hybrid check GOH-1 was evaluated in a randomized block design with three replications in both the environments. Observations were recorded on fruit yield per plant and eight other yield components. The individual environment-wise and pooled analysis of variance revealed sufficient variation among the genotypes for all the traits studied, indicating the existence of sufficient variability in the material. The pooled analysis over environments revealed that environmental differences were non-significant for all the characters, thereby suggesting that the characters were not influenced by the changes in environment. Considerable level of heterosis was observed for fruit yield and its component traits. Maximum heterosis was observed for number of primary branches per plant followed by fruit yield per plant, plant height, fruits per plant and fruit weight. However, the magnitude of heterosis varied in different environments for the various traits studied.enHORTICULTURE, AGRICULTUREAN ANALYSISThesis