tailieunhanh - Line × tester analysis to determine extent of heterosis for various yield and quality parameters in sugarcane (Saccharum officinarum)

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. | Line × tester analysis to determine extent of heterosis for various yield and quality parameters in sugarcane (Saccharum officinarum)