000			02187nam a2200181Ia 4500
999			_c26617 _d26617
003			OSt
005			20220827145234.0
008			140128s9999 xx 000 0 und d
082			_a635.6 _bTHA/HE
100			_aThankachan Julie Mole
245			_aHeterosis in ridge gourd (Luffa Acutangula (Robx.) L.)
260			_aVellanikkara _bDepartment of Olericulture, College of Horticulture _c2000
502			_bMSc
520	3		_aThe present investigation on Heterosis in Ridge gourd [Luffa acutangula (Roxb.) L] was conducted at the Vegetable Research Farm, College of Horticulture, Thrissur during 1999-2000. From the germplasm available in the Department of Olericulture, five parents belonging to different genetic clusters were selected. They were crossed in a diallel fashion to produce F 1 hybrids. The FI's without reciprocals were grown in a randomised block design. These F, hybrids were evaluated along with their parents to derive information on general and specific combining ability. From combining ability analysis, it was noticed that the parental lines LA 81 and LA 87 were good combiners for yield. The best comination for yield was LA 81 x LA 44 and that for earliness was LA 43 x LA 44. The best combination for average fruit weight and fruit length was LA 87 x LA 86. The combination LA 44 x LA 87 had maximum duration which also exhibited maximum vine length. The standard heterosis was highest for LA 43 x LA 44 for earliness. The maximum heterosis for yield was exhibited by the combination LA 81 x LA 44 which also showed increased fruit number per plant. The combination LA 81 x LA 44 showed increased fruit girth which also showed more number of fruits per plant hence increased yield. But length of fruit was maximum for the combination LA 87 x LA 86 but fruits produced by this cross was less. The study revealed that the three hybrids viz. LA 81 x LA 44, LA 87 x LA 86 and LA 43 x LA 44 are promising hybrids showing superiority in yield and its component characters considered in the study.
700			_aNirmala Devi S (Guide)
856			_uhttp://krishikosh.egranth.ac.in/handle/1/5810104174
942			_2ddc _cTH