Thirty genotypes of fenugreek (<italic>Trigonella foenum-graecum</italic> L.) were evaluated over four environments in randomized block design with 3 replications to estimate stability parameters of seed yield and its important component traits. The environments were created by changing the dates of sowing and irrigation levels. The genotypes interacted with the environments significantly indicating non linear response of genotypes to environments. Simple correlations between seed yield and other traits indicated that pods per plant and the test weight are the two important component traits. Stability analysis indicated difference in stability among the genotype for seed yield and the component traits. A positive correlation was noted between the regression coefficient and the mean seed yield of the genotypes, thus hypothesizing that higher yielding genotypes were better suited to better environments. The results of AMMI analysis corroborated with the results obtained from stability anlaysis, although AMMI analysis provided a better chance to delineate the genotypes and environments. Genotypes UM-137, UM-128, UM-322 and RMt-1 are found relatively stable for seed yield.
A field experiment was conducted during the winter seasons of 2007-08 to at Jobner, India on loamy sand soil to evaluate the effect of integrated nutrient management on growth, productivity and economics of fenugreek (Trigonella foenum-graecum). The experiment consisted of fourteen combinations of integrated nutrient management practices for application of recommended dose of nitrogen (RDN) to fenugreek i.e., 40 kg/ha, through different sources, viz., control, inorganic or organic [farmyard manure (FYM), poultry manure (PM), vermicompost (VC) and neem cake (NC)] alone or in combinations was laid out in randomized block design with three replications. Based on three years of study the results revealed that application of all nutrient management treatments through organic and inorganic sources alone or in combination brought significant effect on growth, yield and economics of fenugreek. Further the results revealed that integration of 50% RDN through vermicompost (VC) + 50% RDN through inorganic source to fenugreek recorded higher plant height, branches/ plant, pods/plant, seeds/pod, test weight, seed yield (1781 kg/ha), stover yield (3392 kg/ha), biological yield (5173 kg/ha) and net returns (Rs. 52151/ha). However, maximum benefit cost ratio was fetched with application of 100% RDN through inorganic source.
Background: Groundnut is an important oilseed crop in the India. The groundnut kernels serve as a rich source of edible oil (48-50%) and quality protein (25-28%). In crop improvement programme, availability of sufficient genetic variability is of immense importance. The knowledge of nature and magnitude of genetic variance controlling yield and yield components is a prerequisite for improvement of yield in any crop. Methods: The present investigation was undertaken to assess the genetic variability and character associations for pod yield and component characters in 45 genotypes of groundnut. The genotypes were raised in randomized complete block design with three replications during kharif 2019 at SKNAU, Jobner (Rajasthan). Result: The analysis of variance revealed significant differences among the genotypes for all the characters studied indicating presence of wide genetic variation for different characters. In the present investigation, high genetic advance coupled with high heritability and GCV was observed for biological yield per plant, 100-kernel weight, kernel yield per plant, dry pod yield per plant and pods per plant which indicated prevalence of additive gene action in their expression and these traits possessed high selective value. Kernel yield per plant, pods per plant and biological yield per plant exhibited significantly positive correlation with dry pod yield per plant both at genotypic and phenotypic levels, while shelling percentage at genotypic level only. Three characters viz., kernel yield per plant, pods per plant and biological yield per plant could be considered as direct selection parameters for yield improvement in groundnut because they exerted positive direct effect on dry pod yield per plant.
A set of diallel crosses involving 10 diverse parents (excluding reciprocals) of barlay (Hordeum vulgare L.) was made and its F2’s were evaluated under three different date of sowings during rabi 2015-16 and 2016-17 at RARI, Durgapura, Jaipur, Rajasthan, India. Heterosis for grain yield per plant ranged from -20.75 to 41.86 %; -21.95 to 39.65 %and -48.13 to 64.34 % under early (E1), normal (E2) and late (E3) sowing conditions, respectively. Out of 45 crosses, nine crosses in E1 and fifteen crosses in each E2 and E3 exhibited positive significant heterosis while, seven crosses in E1 and E3 and nine crosses in E2 exhibited positive significant heterobeltiosis. Negative significant inbreeding depression for grain yield per plant was reported. Overall, crosses BHS 400 × PL 426, PL 426 × RD 2552 and BH 959 × RD 2552 exhibited positive significant heterosis and heterobeltiosis. Hence, these crosses considered to be most desirable for grain yield per plant. The study revealed good scope for commercial exploitation of heterosis as well as isolation of pure lines among the progenies of heterotic F1 for improvement of yield.
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