National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Since sugarcane is a vegetatively propagated crop, heterosis can be settled and exploited in F1 age. The extent of heterosis gives a foundation to decide genetic diversity of variety and furthermore serves as a guide for the decision of attractive superior parents. Information about the magnitude of heterosis is the prerequisite criteria for the development of superior hybrids. A good hybrid should manifest high amount of heterosis for commercial exploitation. High and low positive heterosis observed was mainly due to varying genetic composition between parents of different crosses for the components characters. The knowledge of combining ability together with per se performance of the parents and hybrids, and heterotic response helps the breeders in selecting suitable parents and crosses for their use in a systematic breeding programme. The information on heterosis for quality and yield attributing characters obtain from the results of this Line × Tester experiment including cross progenies of four lines and two testers along with parents and six checks were discussed here. These crosses along with parents and six check varieties were tested in randomised block design with four replications. Results obtained revealed that genotypes differ significantly for all the 13 traits studied indicating presence of sufficient amount of variability in the present experimental material. Further heterotic studies revealed presence of pronounced hybrid vigour for various traits studied. Positive and significant relative heterosis and heterobeltiosis was recorded for tillers count and Number of Millable Canes. Also, significant positive economic heterosis was recorded for Germination Percent, tillers count and Single Cane Weight, Cane Height, Number of Millable Canes, cane yield and purity Percent over different check varieties. The present study suggested that exploitation of CoPant 84212 × CoPant 97222, CoPant 99213 × CoPant 97222 and CoPant 98224 × CoPant 97222 should be more useful for future breeding programme of sugarcane.
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