Selection of Suitable Parents in the Development of Potato Hybrids in Bangladesh

Ten crosses involving seven parents crossed in line ×tester design were studied for main stem height.plant-1,main stem leaves.plant-1,stems.plant-1,plant weight.plant-1,average tuber weight.plant-1 and tuber dry matter %in F1 generation.The additive gene action was found to be more important for the characters,main stem height.plant-1,main stem leaves.plant-1,stems.plant-1,plant weight.plant-1,and average tuber weight.plant-1.Among seven parents,Lal-silbilati,Lalpakri and Ausha were good combiners for the characters,main stem height.plant-1,main stem leaves.plant-1andaverage tuber weight.plant-1,respectively.For average tuber weight.plant-1,the crosses Patnae/TPS-67 and Lalpakri/TPS-13 showed significant positive specific combining ability effects.Ausha/TPS-67 showed significant positive specific com-bining ability effects for main stem leaves.plant-1.

Ten crosses involving seven parents crossed in line × tester design were studied for main stem height·plant^-1, main stem leaves·plant^-1, stems·plant^-1, plant weight^-1plant^-1, average tuber weight·plant^-1 and tuber dry matter % in F1 generation. The additive gene action was found to be more important for the characters, main stem height·plant^-1, main stem leaves·plant^-1, stems·plant^-1, plant weight·plant^-1, and average tuber weight·plant^-1 Among seven parents, Lalsilbilati, Lalpakri and Ausha were good combiners for the characters, main stem height·plant^-1, main stem leaves·plant^-1 arid average tuber weight·plant^-1, respectively. For average tuber weight·plant^-1, the crosses Patnae/TPS-67 and Lalpakri/TPS- 13 showed significant positive specific combining ability effects. Ausha/TPS-67 showed significant positive specific combining ability effects for main stem leaves·plant^-1.