SELECTION INDICES FOR SEED YIELD IN INDIAN MUSTARD (BRASSICA JUNCEA (L.) CZERN & COSS).!' BASED ON PHYSIOLOGICAL ATTRIBUTES

Abstract

Selection indices based on the relative importanc:e oI'rour pbysiological attributes were used in nonsegregatinR populations oI'two crosses ollndiaD mustard, lIIUIK!Iy im JO X RC 781 and Prakash X RC 1425. It was oIJserved that leaf area duration and leaf area index lit reproductive phase, wben selected sim~,n$IIted in the hiIbest ceneticpin in seed yield. SeIedion indices based on leafarea duration and leafarea index exbibited superiority over stnUPt selection ror yield in both crosses. However,leafarea dorationeombined with any other dlaradersatisfactorily improved the expeded genetk: pinin both croaes. TIlegenotypes barinc persistent green leaves till pbysiological maturity refteeted ...... leaf area duration, beuce selection ror ibis physiological attri~ at this stage would be desinbIe ror seed yield improvement in ibis crop.