caa a22 4500 475795199 CHVBK 20180406123722.0 cr unu---uuuuu 170329e20000201xx s 000 0 eng 10.1007/s001220050073 doi (NATIONALLICENCE)springer-10.1007/s001220050073 The genetics of rust resistance in sugar cane seedling populations [Elektronische Daten] [K. Ramdoyal, S. Sullivan, L. C. Y. Lim Shin Chong, G. H. Badaloo, S. Saumtally, R. Domaingue] Abstract : The inheritance of rust resistance was studied in sugar cane seedling populations using a factorial mating design over 1 summer and 2 winter seasons. Frequency distributions for rust infection pooled over 2 winter seasons for resistant x resistant parents were highly skewed with the majority of progenies grouped towards the resistant classes, whereas crosses between susceptible x highly susceptible parents tended to be skewed with the majority of progenies grouped towards the susceptible ones. Both categories of crosses produced transgressive segregants at either extremes. Distribution of infection within progeny of the selfed resistant parent 'R 570' and distribution in the majority of crosses tended to support the hypothesis of a major gene with a dominant effect for resistance. However, the action of other minor genes acting in a quantitative way is also suggested. The female (F) and male (M) variance components were very important, and F×M interaction indicated the existence of non-additive genetic effects. F×S, M×S and F×M×S interaction mean squares were generally low or insignificant. Broad-sense heritability for the individual season ratings and for the combined ratings was high (0.75-0.90), whereas narrow-sense heritability was generally moderate (0.40-0.52) with the additive genetic effects accounting for 44-68% of the total genetic variation. The implications of these findings in the breeding for rust resistance in the local programme are discussed. Springer-Verlag Berlin Heidelberg, 2000 Key words Heritability nationallicence Major gene nationallicence Puccinia melanoceplala nationallicence Rust nationallicence Sugar cane nationallicence Ramdoyal K. Mauritius Sugar Industry Research Institute, Réduit, Republic of Mauritius, MU aut Sullivan S. Mauritius Sugar Industry Research Institute, Réduit, Republic of Mauritius, MU aut Lim Shin Chong L. C. Y. Mauritius Sugar Industry Research Institute, Réduit, Republic of Mauritius, MU aut Badaloo G. H. Mauritius Sugar Industry Research Institute, Réduit, Republic of Mauritius, MU aut Saumtally S. Mauritius Sugar Industry Research Institute, Réduit, Republic of Mauritius, MU aut Domaingue R. Mauritius Sugar Industry Research Institute, Réduit, Republic of Mauritius, MU aut https://doi.org/10.1007/s001220050073 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s001220050073 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ramdoyal K. Mauritius Sugar Industry Research Institute, Réduit, Republic of Mauritius, MU aut NATIONALLICENCE 700 1- Sullivan S. Mauritius Sugar Industry Research Institute, Réduit, Republic of Mauritius, MU aut NATIONALLICENCE 700 1- Lim Shin Chong L. C. Y. Mauritius Sugar Industry Research Institute, Réduit, Republic of Mauritius, MU aut NATIONALLICENCE 700 1- Badaloo G. H. Mauritius Sugar Industry Research Institute, Réduit, Republic of Mauritius, MU aut NATIONALLICENCE 700 1- Saumtally S. Mauritius Sugar Industry Research Institute, Réduit, Republic of Mauritius, MU aut NATIONALLICENCE 700 1- Domaingue R. Mauritius Sugar Industry Research Institute, Réduit, Republic of Mauritius, MU aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer