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A Study on Genetics of Red Rot Resistance in Sugarcane
oleh: Alarmelu,S., R.Nagarajan, R. M..Shanthi, D.Mohanraj and P.Padmanabhan
Format: | Article |
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Diterbitkan: | Indian Society of Plant Breeders 2010-07-01 |
Deskripsi
Out of 7 crosses with one or both the parents resistant to red rot, five crosses produced predominantly resistant progeniesranging from 61.64% in Co 7201 x 96-195 to 83.72% in Co 86002 x 96-38. In two crosses with one of the parents resistantthere was a higher proportion (77.61 to 91.67%) of susceptible progenies. The cross Co 7201 x 96-104 (MR x MR) producedmaximum proportion (80.0 %) of resistant seedlings. In the crosses with Co 86002 (S) as female parent and three othermoderately resistant male parents, the proportion of resistant progenies was higher compared to susceptible ones. In the crossinvolving female parent as MR and male as MS (Co 7201 x 96-195) the proportion of resistant seedlings was 61.64% andsusceptible 38.36%.The parents 96-38, 96-195, 95-108 (F1 of improved S.officinarum x S.spontaneum) produced moreresistant progenies.The parent Co 7201 was identified as a good general combiner and found to transmit resistance to majorityof its progenies.