Path coefficient analysis of some mango varieties grown under Orissa agro-climatic condition.
Dash S. K., Tripathy L.
Author Affiliation: College of Horticulture, Orissa University of Agriculture and Technology, Chiplima, Sambalpur 768 025, India.
Environment and Ecology 29 : 1572-1575
Abstract : An experiment was conducted in a private orchard with eight commercial mango varieties of Orissa of age five years during 2000-2002 and 17 characters were studied for two seasons, to assess the genotypic and phenotypic path coefficient in correlation to yield of mango. This was primarily done to enumerate the characters to be considered before going for mango improvement program. The data collected over two years were pooled over and subjected to statistical analysis. The result indicated that canopy area in m2 (24.266), number of laterals per m2 (10.55), days for flower initiation (7.381), panicle width (7.064), sex ration (5.079) pulp % (4.954), number of leaves per shoot (1.417) and fruit weight in grams (0.004) have direct effect on yield at genotypic level and should be considered for improvement by the breeder during selection of a variety. While phenotypic path coefficient analysis indicated that days for flower initiation (1.322), canopy area (0.974), number of perfect flowers (0.693), fruit set per panicle (0.538), sex ratio (0.477), fruit weight (0.151), pulp % (0.121), number of laterals per m2 (0.105), number of rachis per panicle (0.054) direct effect on yield. Characters like canopy area (m2), flower initiation (days), pulp% had direct effect on yield both at genotypic and phenotypic level.