TY  - BOOK
AU  - Thankachan Julie Mole 
AU  - Nirmala Devi S (Guide)
TI  - Heterosis in ridge gourd (Luffa Acutangula (Robx.) L.)
U1  - 635.6 
PY  - 2000///
CY  - Vellanikkara
PB  - Department of Olericulture, College of Horticulture
N2  - The 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. 


UR  - http://krishikosh.egranth.ac.in/handle/1/5810104174
ER  -