Abstract
Ten genotypes of sugarcane (Saccharum officinarum L.) viz. COJ-84, CPF-235, COL-54, SPSG-26, COJ-64, SPF-232, CPF-237, S-97-US-297, KATHA and No-61 were evaluated for twelve characters and analyzed for genotypic and phenotypic correlation. Analysis of variance indicated highly significant differences exist for all the traits. Among the traits leaf area, number of tillers, cane thickness, and cane yield had the positive and significant correlation with brix value at both genotypic and phenotypic levels. Cane height had negative but non-significant correlation with brix value at genotypic and phenotypic level. Similarly cane weight had positive correlation both at genotypic and phenotypic level with cane height, number of tillers per plant and brix value. The study of path analysis for yield related traits depicted that cane height, cane thickness, leaf area, internodal length and brix value had the direct negative effects on yield.
Highlights
Sugarcane is an important industrial crop of tropical and subtropical regions is cultivated on 20 million ha in more than 90 countries
The perusal of table 2 predicted that cane height showed negative correlation with leaf area, no of stools, no of millable canes and brix value which, is non-significant at both genotypic
It was found that association of cane height with cane diameter was positive and significant at genotypic (0.3879) but non-significant at phenotypic level (0.3456). cane height had positive and significant correlation with internodal length, no of nodes, juice contents, baggas weight, dry matter and cane weight at genotypic level (0.6582, 0.6217, 0.3134, 0.4636, 0.4519 and 0.5056 respectively) but positive and highly significant at phenotypic level with internodal length, no of nodes and cane weight (0.6132, 0.5230 and 0.4877 respectively) whereas significant with baggas weight and dry matter (0.4477 and 0.4399)
Summary
Sugarcane is an important industrial crop of tropical and subtropical regions is cultivated on 20 million ha in more than 90 countries. It accounts for around 60% the world’s sugar (Khan et al, [1]). It is an important cash crop in many developing/developed countries, because of its high trade value (Naz, [2]). In Pakistan more efforts for tonnage while sucrose recovery remained low In this crop, varietal improvement by using newly developed scientific concepts to bring out the maximum expression of yield potential possessed by varieties are the factors desiring more attention of the researchers. Stevenson [6] pointed out that there may not be specific
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