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HETEROSIS AND COMBINING ABILITY ESTIMATES FOR YIELD AND YIELD COMPONENTS IN MAIZE (Zea mays L.)

KrishiKosh

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Title HETEROSIS AND COMBINING ABILITY ESTIMATES FOR YIELD AND YIELD COMPONENTS IN MAIZE (Zea mays L.)
 
Creator SANDEEP KUMAR, T
 
Contributor MOHAN REDDY, D
 
Subject yields, crossing over, heterosis, planting, maize, grain, hybrids, developmental stages, exhibitions, biological phenomena
Zea mays L
 
Description The present investigation was undertaken in maize (Zea mays L.) to
study heterosis, combiniion>Although India possesses the large volume of livestock, their productivity is abysmally low at global level. India, with its wide variation in geo-ecological parameters, elucidates a high variation in the productivity of its livestock, among regions. The compound growth rate of livestock productivity was worked out for the Southern Peninsular state of India, Tamil Nadu. The average productivity of milk in cross bred cows and buffaloes in Tamil Nadu was less than the national average, while the productivity desi cows was a bit a more. The annual compound growth rate of milk productivity among crossbred cows of Tamil Nadu was at meager 0.54 per cent during the period between 1998-1999 and 2006-2007, whereas the productivity of milk in desi cows had improved from at an annual compound growth rate of 1.29 per cent. Notably, the milk productivity in buffaloes had declined at a rate of 0.29 per cent during the period under study. The annual compound growth of egg productivity in improved hens of Tamil Nadu was 20.87 per cent. The average annual productivity was 109.531 eggs, which improved from 70.623 in 1998-1999 to 197.084 in 2004-2005. Correspondingly, the productivity of desi hens also had a positive swing from the year 2003-2004 onwards. The results implied that the simulation of increased productivity, better farm financing and improved milk marketing could result in enhanced livestock production that would meet the future demands.
 
Date 2016-06-10T17:03:55Z
2016-06-10T17:03:55Z
2011-02
 
Type Article
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67190
 
Language en
 
Format application/pdf
 
Publisher Veterinary World