A new high yielding mungbean (Vigna radiata (L.) Wilczek) variety 'Ramzan' for the agro climatic conditions of NWFP.

摘要

An exotic genotype (VC 1482C) and a local mungbean genotype (NM 92) were crossed in a field experiment conducted in Faisalabad, Pakistan during the kharif season of 1998. Selection of the high yielding recombinant NFM-12-12 from segregating populations, and its evaluation in various replicated yield trials for yield potential and stability test were carried out from 1999 to 2004. The proposal for the recombinant NFM-12-12 to be approved as a commercial cultivar was submitted on 19 September 2005. The Provincial Seed Council approved the recombinant NFM12-12 as a commercial cultivar under the name "Ramzan" for general cultivation in NWFP. The major improvement in NFM-12-12 included increase in seed size, decrease in plant height, stiff stem and earliness in maturity by a margin of 10 days compared to the control cultivar NM 98. The large seed size of NFM-12-12 was the main contributing factor towards the increase in its seed yield compared to NM 98. The high harvest index of NFM-12-12 invoked its greater physiological efficiency in partitioning the photosynthates towards grain formation leading to marked increase in grain yield. Short stature and stiff stem of NFM-12-12 improved the resistance to lodging of the cultivar. Clusters per plant, pods per plant, branches per plant, pod length, seeds per pod and protein contents of NFM-12-12 also compared favorably with parent NM 92 and standard NM 98. NFM-12-12 had 28-36% high seed yield potential compared to the standard cultivar NM 98 and parent NM 92. An average experimental seed yield of Ramzan was 1962 kg/ha..