Correlation and path analysis of yield determinants in potato (Solanum tuberosum L.) hybrids
2007
Shashi Kamal | Rajkumar | Raghav, M. | Singh, Y. V. | Singh, N.P.
The study on phenotypic and genotypic correlation and path coefficient analysis was conducted in twenty-five hybrids of potato during Rabi 2003-04 and 2004-05. Pooled analysis for the correlation coefficients among the various traits revealed that maximum and significantly positive genotypic and phenotypic correlation of tuber yield was recorded with average tuber weight and number of tubers per hill. Negative correlation of significant value with tuber yield was exhibited by shoot girth. Protein content showed negative correlation with all growth and quality characters except number of tubers per hill. Path coefficient analysis revealed that tuber weight, plant height, number of tubers per hill, number of stolon per hill, number of leaves per haulms and number of haulms per hill have positive effect on tuber yield. Keeping in view high negative direct effect on tuber yield of total soluble solids, phosphorus content, specific gravity of tuber and total chlorophyll content, it is suggested that important yield determining traits viz., tuber weight, plant height and number of tubers per hill should be given due importance during selection for improvement of yield in potato.
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Эту запись предоставил Indian Council of Agricultural Research