Lado Mogga, Richard Edema, Jimmy Lamo

INHERITANCE OF RESISTANCE TO RYMV IN SELECTED RICE CULTIVARS IN UGANDA

DETERMINING THE MODE OF INHERITANCE FOR RESISTANCE TO A PREVALENT RYMV STRAIN IN UGANDA

• Broschiertes Buch

Produktbeschreibung

Rice yellow mottle sobemovirus is identified as the most destructive viral disease in lowland and upland rice. In this study, the mode of inheritance of resistance to a prevalent RYMV strain in Uganda was determined for resistant lines (upland NERICAs 8, 11, 12, 13 and Gigante (an O. sativa lowland variety) crossed with susceptible lines (lowland NERICAs 4, 6, 10 and IR64 (an O. sativa lowland variety)) in a full diallel mating design. Segregating F2 progeny were planted in field and screen house in -lattice design and inoculated by standard mechanical procedures. Reciprocal effects were significant (P0.001), GCA effects were significant (P0.001) and larger than SCA effects. The narrow sense coefficient of genetic determination based on genotype means was relatively high in screen house (76%) and field (84%) experiments. These results suggest additive gene effects were more important than non- additive effects, and selecting in F2 or F3 generations can be effective. Significant reciprocal effects implies the need for careful choice of male and female parents in hybridisation programs to achieve RYMV resistance in the offspring.

Produktdetails

• Verlag: LAP Lambert Academic Publishing
• Seitenzahl: 104
• Erscheinungstermin: 7. März 2011
• Englisch
• Abmessung: 220mm x 150mm x 7mm
• Gewicht: 173g
• ISBN-13: 9783843386838
• ISBN-10: 3843386838
• Artikelnr.: 33195008

Autorenporträt

El Sr. Lado Maurice Mogga nació el 13 de abril de 1981. Terminó la enseñanza primaria en 1995, la enseñanza secundaria en 1999, la enseñanza de nivel superior en 2001, la licenciatura en agricultura en 2006, y una maestría en fitomejoramiento y sistemas de semillas, en la Universidad de Makerere, kampala, Uganda, en 2010.