Development of ?super-early? pigeonpeas with good yield potential from early × early crosses uri icon

abstract

  • To enhance the adaptability of pigeonpea at higherlatitude and altitude, a breeding program was initiated atICRISAT involving different sources of early-maturity.A full diallel mating design involving 11 early-maturinglines were used as parents. In F2?F5 generations, selectionwas followed for early flowering and maturity, grainyield and 100-seed weight by pedigree method. Fourbrown seeded (ICPX 060064-4-6-10, ICPX 060077-6-5-14,ICPX 060064-4-6-2 and ICPX 060063-11-8-4) and onecream seeded (ICPX 060036-13-4-8) F4/F5 indeterminatesuper-early progenies that matured, respectively 25 and23 days earlier than the control cultivar ICPL 88039 wererecovered. ICPX 060036-13-4-8 recorded 107% and34% grain yield advantage over the checks ICPL 86022and ICPL 88039, respectively. These super-early lineswere derived from crosses involving AL 1518-2 × ICPL85010, AL 1621 × MN 5, AL 1518-2 × MN 8 and MN 8× AL 1518-2. Other super-early progenies (ICPX060016-10-8-1 (from MN 1 × AL 1518-2 cross) andICPX 060017-12-12-20 (from MN 1 × AL 1621 cross))with greater 100-seed weight were also recovered.Besides serving as excellent donors for earliness, theselines may be photo/thermo insensitive. These super-earlypigeonpea lines may open new niches for this crop andhelp in intensification of farming system

publication date

  • 2012