Correlation and path analysis in advanced generations of okra [Abelmoschus esculentus (L.) Moench.]

摘要

Okra is an annual vegetable crop grown in tropical and subtropical parts of the world. For designing an effective plant breeding programme, adequate knowledge about the magnitude and direction of association between field and its component traits is essential. Correlation is an association of 2 variables. Since all genes affecting phenotype of 2 variables may not be completely linked, correlation is seldom complete and must be tested for its significance to confirm whether observed correlation is real or by chance. The path analysis devised by Dewey and Lu (3) provides an effective means of finding out direct and indirect causes of association, and permits a critical examination of given correlation and measure relative importance of each factor. Such information reveals the possibility of simultaneous improvement of various attributes and also help in increasing the efficiency of selection of complex inherited traits. Therefore, studies were undertaken to work out correlation and path coefficients among different characters.