Abstract
Sugarcane flowering in response to photo-thermo sensitivity is a major productivity constraint in Peninsular India, as it is not only causing loss in cane and sugar productivity but also drastically affecting economic crushing season and fodder security. Development of non/shy flowering (photo-thermo insensitive) varieties could be the best approach. In this context, an investigation was carried out to identify parents/crosses and productive progenies for this important region. Among 27 crosses studied, the crosses viz., Co 86032 × Co 86250, Co 95021 × Co 97015, ISH 100 poly cross, CoC 671 × CoT 8201 and Co 740 × Co 775 produced higher percentage of non-flowering progenies with acceptable productivity features (HR Brix % and cane yield components). The parents viz., Co 86032, Co 95021, CoC 671 and Co 740 were characterized as late and shy flowerers and these features were contributed to progenies leading to production of higher frequencies (%) of non-flowering and shy flowering progenies compared to other parents and crosses. The other parent’s viz., CoM 0265, CoC 90063 and Co 7201 did not produce any non-flowering/shy flowering progenies as they were highly profuse flowering types. Twenty non/shy flowering productive clones along with five commercial standards were evaluated across five diverse flower inductive locations in northern Karnataka. Three non flowering clones viz, SNK 07337, SNK 07680 and SNK 07658 were found to be the most promising for commercial cultivation as they recorded superior sugar and cane productivity with on par juice quality parameters compared to most popular check Co 86032.
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Patil, S.B., Guddadamath, S.G. & Khadi, B.M. Genetic Enhancement of Sugarcane Productivity Combining Non Flowering Feature. Sugar Tech 17, 386–394 (2015). https://doi.org/10.1007/s12355-014-0338-x
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DOI: https://doi.org/10.1007/s12355-014-0338-x