Heterosis

Prediction of industrial tomato hybrids from agronomic traits and ISSR molecular markers

A. S. T. Figueiredo, Resende, J. T. V., Faria, M. V., Da-Silva, P. R., Fagundes, B. S., Morales, R. G. F., Figueiredo, A. S. T., Resende, J. T. V., Faria, M. V., Da-Silva, P. R., Fagundes, B. S., and Morales, R. G. F., Prediction of industrial tomato hybrids from agronomic traits and ISSR molecular markers, vol. 15, p. -, 2016.

Heterosis is a highly relevant phenomenon in plant breeding. This condition is usually established in hybrids derived from crosses of highly divergent parents. The success of a breeder in obtaining heterosis is directly related to the correct identification of genetically contrasting parents. Currently, the diallel cross is the most commonly used methodology to detect contrasting parents; however, it is a time- and cost-consuming procedure. Therefore, new tools capable of performing this task quickly and accurately are required.

Heterosis and correlation in interspecific and intraspecific hybrids of cotton

S. Munir, Hussain, S. B., Manzoor, H., Quereshi, M. K., Zubair, M., Nouman, W., Shehzad, A. N., Rasul, S., Manzoor, S. A., Munir, S., Hussain, S. B., Manzoor, H., Quereshi, M. K., Zubair, M., Nouman, W., Shehzad, A. N., Rasul, S., and Manzoor, S. A., Heterosis and correlation in interspecific and intraspecific hybrids of cotton, vol. 15, p. -, 2016.

Interspecific and intraspecific hybrids show varying degrees of heterosis for yield and yield components. Yield-component traits have complex genetic relationships with each other. To determine the relationship of yield-component traits and fiber traits with seed cotton yield, six lines (Bt. CIM-599, CIM-573, MNH-786, CIM-554, BH-167, and GIZA-7) and three test lines (MNH-886, V4, and CIM-557) were crossed in a line x tester mating design. Heterosis was observed for seed cotton yield, fiber traits, and for other yield-component traits.

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