VARIABILITY AND CORRELATION STUDIES IN SELECTED SUGARCANE (Saccharum officinarum L.) CLONES AT TWO LOCATIONS IN NIGERIA
VARIABILITY AND CORRELATION STUDIES IN SELECTED SUGARCANE (Saccharum officinarum L.) CLONES AT TWO LOCATIONS IN NIGERIA
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Date
1997-02
Authors
ISHAQ, MOHAMMED N.
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Abstract
Eight selected genetically diversified sugarcane clones
were evaluated for two Years (1993 and 1994) at two locations
(Badeggi in the Southern guinea savanna and Uyo in the forest
agroecology) in Nigeria. The objectives was to study the extent of
variability and relationship between the various quantitative and
qualitative traits for the purpose of genetic improvement.
Significant differences were observed between clones for all
traits. Important yield components like stalk height, stalk
weight, number of stalks per stool and establishment count showed
wide ranges in the magnitude of genotypic coefficient of variation.
Genotypic components of variance for these traits also contributed
more to be phenotypic variance. Performance data were also used to
obtain correlations between the traits studied. Correlation
coefficients obtained in all the important yield components were
positive and significant except for stalk diameter and leaf width.
The correlations revealed that stalk weight, stalk height, number
of stalks per stool as well as the establishment count were the
major traits contributing to cane yield. Since correlation only
measures the mutual association between traits without regard to
causation, path analyses which specifies the causes of the
association and the association between traits and their importance
showed that stalk weight, stalk height, number of stalks per stool
had direct effect on cane yield. Stalk diameter showed its effect
indirectly through stalk weight and stalk height
Description
A thesis submimitted to the Post-graduate School of Ahmadu Bello
University, Zaria, Nigeria in Partial Fulfillment of the
requirement for the Degree of Master of Science (Crop Breeding)
in the Department of Plant Science
DEPARTMENT OF PLANT SCIENCE
FACULTY OF AGRICULTURE
AHMADU BELLO UNIVERSITY
ZARIA
NIGERIA
February, 1997
Keywords
VARIABILITY,, CORRELATION,, SELECTED SUGARCANE,, (Saccharum officinarum L.),, CLONES,, TWO LOCATIONS IN NIGERIA