Biochemical Response on Three Growth Phases of Chickpea under Graduated Salt Stress

Chickpea (Cicer arietinum L.) is sensitive to salt sress, that affects its yield and there is need to identify the tolerant genotypes. The present study was conducted to evaluate the effect of NaCl salt stress on chickpea genotypes with specific biochemical attributes contributing to their adaptability to salt stress. Ten chickpea genotypes both desi (Annigeri 1, BGD103, NBeG47, JG11, GBM2, JAKI9218, ICC1431, ICC5003, ICCV96029) and kabuli (MNK 1) were evaluated for salinity tolerance. To determine the most tolerant genotype to salinity stress, an experiment was done at College of Agriculture, Vijayapur during 2019 as factorial form under completely block design (CRD) with three replications and 3 treatments, control and 2 NaCl salinity levels (3dS/m and 6dS/m) in 10 chickpea cultivars at 30, 60 and 90 days after sowing. Salinity is a serious abiotic stress, causing oxidative stress. Various biochemical parameters in chickpea genotypes were considered under varied NaCl concentrations. The results revealed that proline was significantly higher in JG 11 (33.42 mg g-1fr. wt.) at 6 dS.m-1 of salt as compared to other genotypes, because of high concentration of proline content enable JG11 to maintain low water potentials and tolerance to salt stress. Salt stress reduces the total chlorophyll content of leaves in salt susceptible plants and increases it in salt tolerant plants. The chlorophyll content decreased in all genotypes during the stress. Maximum decrease in chlorophyll content was observed with ICCV96029 and NBeG 47 among ten genotypes. Among biochemical parameters, the proline concentration was increased by high salinity, while total chlorophyll concentration was decreased in all tested genotypes. Hence proline and total chlorophyll content were more consistent with salt tolerance responses of the genotypes

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Not AvailableSorghum [Sorghum bicolor (L.) Moench] is a C4 plant making it better adapted to high temperature, water deficit and elevated CO2 concentration in the atmosphere.It is the fifth most important cereal after rice, wheat, maize and barley at world level. It is used as food, feed, fodder and biofuel. Major growing states are Maharashtra, Karnataka, AP, MP, Rajasthan & Tamil Nadu. Despite of several efforts, the expected genetic gain in this crop has not been achieved so far. Systematic studies in terms of understanding the physiological bases of the yield and its attributing traits helps in achieving better genetic gains. Sorghum faces moisture stress in a post rainy growing situation making it non remunerative to the farming community. In this context, the present investigation was carried out at Centre on Rabi sorghum (ICAR-IIMR), Solapur to get insight into the drought related physiological parameters. The study consists of 74 sorghum germplasm accessions, grown in RCBD with two replications. The variability in seven physiological traits [Relative water content, chlorophyll content, Specific leaf area, specific leaf weight, SPAD chlorophyll meter reading, Leaf Area Index, Canopy temperature difference] was studied. Study revealed that, there is a significant difference between accessions for most of the physiological traits. Maximum variation was found in chlorophyll b (CV = 55.6) followed by chlorophyll a (CV =31.8), SLW (CV = 25) and SPAD (CV = 18.7). LAI (range = 5.2-10.86), CTD (range = -1.27-10.83°c) and SLW (range= 0.18- 0.73mg/cm2), these lines with better physiological traits and higher grain yield can be utilized further as donors in breeding program to isolate superior varieties/ genotypes for drought tolerance in a post-rainy situation.Not Availabl

Not Available

Not AvailableSorghum [Sorghum bicolor (L.) Moench] is a C4 plant making it better adapted to high temperature, water deficit and elevated CO2 concentration in the atmosphere.It is the fifth most important cereal after rice, wheat, maize and barley at world level. It is used as food, feed, fodder and biofuel. Major growing states are Maharashtra, Karnataka, AP, MP, Rajasthan & Tamil Nadu. Despite of several efforts, the expected genetic gain in this crop has not been achieved so far. Systematic studies in terms of understanding the physiological bases of the yield and its attributing traits helps in achieving better genetic gains. Sorghum faces moisture stress in a post rainy growing situation making it non remunerative to the farming community. In this context, the present investigation was carried out at Centre on Rabi sorghum (ICAR-IIMR), Solapur to get insight into the drought related physiological parameters. The study consists of 74 sorghum germplasm accessions, grown in RCBD with two replications. The variability in seven physiological traits [Relative water content, chlorophyll content, Specific leaf area, specific leaf weight, SPAD chlorophyll meter reading, Leaf Area Index, Canopy temperature difference] was studied. Study revealed that, there is a significant difference between accessions for most of the physiological traits. Maximum variation was found in chlorophyll b (CV = 55.6) followed by chlorophyll a (CV =31.8), SLW (CV = 25) and SPAD (CV = 18.7). LAI (range = 5.2-10.86), CTD (range = -1.27-10.83°c) and SLW (range= 0.18-0.73mg/cm2), these lines with better physiological traits and higher grain yield can be utilized further as donors in breeding program to isolate superior varieties/ genotypes for drought tolerance in a post-rainy situationICA

Correlation and Path Analysis for Growth, Yield, Quality and Incidence of Shoot and Fruit Borer in Brinjal (Solanum melongena L.)

The study was conducted using sixty brinjal genotypes to evaluate yield quality and incidence of shoot and fruit borer with an objective to study the correlation and path coefficient analysis. The majority of the time, genotypic correlations were higher than phenotypic correlations, indicating that the attribute is highly heritable. At the genotypic level, fruit yield per plant significantly correlated positively with the number of fruits per plant, the weight of infested fruit, the girth of fruit, the height of the plant, the number of primary branches per plant, the proportion of medium-styled flowers, the proportion of long-styled flowers, and the length of fruits. It an exhibited significant negative correlation with SFB fruit infestation as well as SFB shoot infestation both at phenotypic and genotypic levels. Path coefficient revealed that fruits per plant showed a high and positive direct effect on yield followed by fruit weight, long -styled flowers, medium -styled flowers, and days to first harvest. Direct selection for these traits would be rewarding for improvement in the fruit yield per plant