GENETIC VARIABILITY FOR NITROGEN USE EFFICIENCY (NUE) AND YIELD ATTRIBUTING TRAITS IN WHEAT
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 48
Abstract
An experiment was conducted to study the genetic variability, heritability and expected genetic advance for morpho-physiological, yield and NUE component traits in wheat accession under two different N levels. A set of 84 wheat genotypes was evaluated at two different nitrogen regimes, the T0 (without an external supply of nitrogen) and T1 (100 kg N/ha, RDF). All the characters studied, have shown good amount of variability in the genotypes. The mean performance of physiological traits like NDVI and SPAD, yield related traits like the number of tillers per meter row, spikelet’s per spike, spike length (cm), thousand grain weight (g) and seed yield (q/ha) and nitrogen use efficient traits like grain N, straw N, nitrogen uptake efficiency (NUpE) was found to be higher under the treatment with external supply of nitrogen (T1) than under the nitrogen stress treatment (T0). The high PCV and GCV values were recorded for trait grain yield, biomass and NUE, which indicates that, these characters have high variability that in turn offers good scope for selection. The high heritability estimates along with high genetic advance was obtained for NDVI at anthesis stage, days to fifty percent flowering, spike length, grain yield, biomass, harvest index (%), straw N, NUtE, NUpE and NUE. These traits are the most important to be taken into consideration for effective selection in wheat for NUE. Based on the four key variables determining N-efficiency in a wheat crop are grains N, NHI, high grain yield and high nitrogen use efficiency can be considered as important criteria for selection of high NUE in wheat. The genotypes viz., 2nd WYCYT 34, 3 rd SATYN 9403, 5th CISA HTEM 10212 and WH 1022, were found showed the highest performance for these characteristics at both T0 and T1 nitrogen levels. These identified lines would be further used in development of nitrogen use efficient wheat varieties, which will greatly facilitate the resource poor farmers to enhance the productivity.
Authors and Affiliations
T. N. SATHISHA
Keywords
Related Articles
- EP ID EP170698
- DOI -
- Views 102
- Downloads 0
INFLUENCE OF PHOSPHAMIDON ON MICROBIAL BIOMASS CARBON, FDA AND SOIL RESPIRATION IN BLACK SOIL (ENTIC CHROMUSTERTS)
Phosphamidon [2-chloro-2-diethylcarbamoyl-1-methylvinyldimethyl phosphate], is a broad spectrum, non-cumulative systemic organophosphorus pesticide widely used in agriculture. The potential harmful effect on soil microbi...
PREVALENCE OF CANINE DEMODICOIS IN HYDERABAD OF TELANGANA STATE
The present study was conducted to investigate the prevalence of canine demodicosis in Hyderabad, Telangana during the period of March to August, 2016. A total of 146 dogs with dermatological signs were examined for Demo...
MANAGEMENT OF PARASITIC WEED (OROBANCHE) IN MUSTARD (Brassica juncea L.) FOR WCE AND YIELD ENHANCEMENT
The present investigation was conducted at Gwalior during rabi 2011-12 entitled management of parasitic weed (Orobanche) in mustard (Brassica juncea L.) for weed control efficiency (WCE) and yield enhancement. The result...
ENZYMATIC AND BIOCHEMICAL STUDIES OF DEFENCE RESPONSES OF MANGO (Mangifera indica L.) HYBRIDS TO LEAFHOPPER INFESTATION
In the present study we evaluated the potential role of antioxidant enzymes and phenols in the defence response of five mango hybrids (Mangifera indica L.‘Mallika’, ‘Swarna Jehangir’, ‘Neeleshan’,‘Neelgoaâ€...
EFFECT OF BIOFERTILIZERS AND FERTILITY LEVELS ON BLACKGRAM (Vigna mungo L.) UNDER CUSTARD APPLE (Annona squamosa L.) BASED AGRI-HORTI SYSTEM IN VINDHYAN REGION OF UTTAR PRADESH
An experiment was conducted at the Agricultural Research Farm of RGSC, Banaras Hindu University, Brakachha, Mirzapur during the rainy (kharif) season 2011. The experiment was laid out in a randomized block design with th...