tailieunhanh - Combining ability studies for morpho-physiological, yield, yield attributes nitrogen use efficiency and its related traits in bread wheat (Triticum aestivum L.)

In India, wheat is the most important cereal crop and plays a major role in food and nutritional safety. Worldwide, there is a growing interest in the development of wheat cultivars that are more effective in utilizing nitrogen (N) and better suited to N constraints. he objective of this research was to investigate the comparative significance of general (GCA) and specific (SCA) combining ability in a set of wheat genotypes with promising lines and their corresponding half-diallel crosses. Combining yield ability for yield attributes, nitrogen use efficiency (NUE) and its associated characters were studied in twelve bread wheat genotypes and their sixty six F1s derived from halfdiallel crosses and assessed under 50 per cent of recommended dose of nitrogen condition using three replicated alpha lattice design. Variance due to GCA has been found to be important for all traits. This indicates the significance of additive genetic variance in regulating the expression of these characters. Significance of variance due to SCA was noted for all traits except for grain protein content and nitrogen harvest index, showing the significance of non-additive genetic variance in regulating the expression of these characters. In most of the traits, the variance ratios were less than unity except for the grain protein content and nitrogen harvest index, thus representing the preponderance of non-additive gene action for most characteristics. Parents namely, 3 SATYN 9402, K9107, HD 2967 and 46 IBWSN 1005 were the best general combiners and crosses namely, 3 SATYN 9402 x K9107, 3 SATYN 9402x HD 2967, 3 SATYN 9402x 46 IBWSN 1005, 3 SATYN 9402 x DBW 14, HD 2967x 46 IBWSN 1005 and WH 1022x K9107 found to be the best specific combiners for yield and NUE associated traits. | Combining ability studies for morpho-physiological, yield, yield attributes nitrogen use efficiency and its related traits in bread wheat (Triticum aestivum L.)

• Nông nghiệp
• Combining ability studies
• Morpho physiological
• Attributes nitrogen
• Efficiency and its related traits
• Bread wheat (Triticum aestivum L
• Combining ability
• Combining ability studies in blackgram
• Blackgram (Vigna mungo (L
• ) Hepper
• Basis of SCA effects
• Bitter gourd (Momordica charantia L )
• Combining ability studies for yield
• Plant characters in bitter gourd
• General combining ability
• Specific combining ability
• Half diallel
• Quality parameters
• Combining ability studies in okra
• Standard heterosis
• Heterosis studies in maize
• Combining ability studies in tomato
• Solanum lycopersicum L
• Mid hills
• Yield per plant and ascorbic acid
• F1 hybrids
• Line x testers
• Snapmelon hybrids
• Combining ability studies on cucumber
• Fruit harvest
• Combining ability studies in bitter gourd
• Bitter gourd
• Quantitative characters
• Single cross hybrids of maize
• Maize (Zea mays L
• Specific combining ability studies
• Non additive gene action controlling
• Abelmoschus esculentus L Moench
• Gca effects
• Sca effects
• Line x Tester
• Hybrid rice
• Rice (Oryza sativa L )
• Yield component traits in rice
• Line×tester
• Combining ability studies in maize
• Drought tolerance
• TLB disease resistance
• Crop improvement
• Studies on magnitude
• Genetic variability
• Estimates of combining ability
• Yield and its contributing traits
• Rabi sorghum
• Studies on combining ability
• Yield and its component traits
• Line x Tester analysis
• Specific combing ability
• Bacterial wilt resistance in tomato
• Forage sorghum
• Sorghum bicolour L Moench
• Yield and quality parameters
• Maize (Zea mays L )
• Genetic action studies
• Related traits in maize
• Fibre strength
• Cotton (G hirsutum)
• Conventional hybrids of cotton
• Combining ability studies in CMS based
• Yield components
• Greengram (Vigna radiata (L ) Wilczek)
• Nutritional traits in greengram
• Ridge gourd
• Luffa accutangula
• Qualitative traits
• Combining ability studies in ridge gourd
• Genetic variance
• Gene actions and Hybridization
• Component traits in groundnut
• Combining ability studies in sunflower
• Seed yield
• Objective to estimate the GCA
• Sca effect for seed yield
• Gene action
• Line and tester
• Tomato (Solanum lycopersicum L )
• Grain yield
• Salinity tolerant restorer lines in rice
• Brinjal for yield
• Yield components traits
• Good combiner for growth
• Hybrid rice (Oryza sativa L )
• Combining ability analysis in hybrid rice
• Component characters