Indian Society of Genetics & Plant Breeding



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High heterosis over better parent and standard variety for quantitative and juice quality
characters In
24 crosses among eight lines and three testers of sugarcane was observed
for all the characters, except sucrose content In juice and purity coefficient. Heterosis for
stalk weight ranged from
-21.3 to 69.6% over better parent and from -11.8 to 57.8%
over standard variety. High standard heterosis over variety Co 1148 was observed only
In four crosses, viz. Co 7314 X Co 775, Co 7314 X Co 1148, PoJ 2878 X Co 775 and
Q 68 X Co 775, because these combinations produced ·14 genotypes showing maximum
(51.8% for stalk weight and 24.4% for sucrose content) over the standard
variety. These combinations can be exploited for heterosis breeding evolving varieties
directly from these heterozygous clones.

Keywords: Heterosis, sugarcane.


Year: 1990
Volume: 50
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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