Genetic Variability of Exotic Sugarcane Genotypes

Area of Science:

• Agricultural Science
• Plant Breeding
• Genetics

Background:

• Sugarcane is a vital sugar crop in Bangladesh, but breeding efforts are hindered by limited genetic diversity.
• Assessing genetic variability in introduced sugarcane genotypes is essential for crop improvement.

Purpose of the Study:

• To evaluate genetic variability and diversity among exotic sugarcane genotypes.
• To identify key traits for selecting high-yielding sugarcane varieties.

Main Methods:

• Conducted experiments with 9 exotic sugarcane genotypes using a Randomized Complete Block Design (RCBD).
• Collected data on growth and yield-contributing characters.
• Analyzed genotypic and phenotypic variations, heritability, correlation, and path coefficients.

Main Results:

• Individual cane weight showed high genotypic and phenotypic variation.
• Several traits, including cane diameter and millable cane number, exhibited high heritability.
• Cane diameter had the most significant direct positive effect on individual cane weight.

Conclusions:

• Individual cane weight, cane diameter, and millable cane number are critical selection criteria for sugarcane breeding.
• These traits can guide the development of improved sugarcane varieties with higher yield and brix content.