Pantnagar Journal of Research

A set of thirty national pool hybrids along with six checks were evaluated during Rabi 2016-17 at Seed Breeding Farm, JNKVV, Jabalpur to study the genetic variability and association analyses for fifteen traits. Wide range of variation for all the traits was observed, indicating the presence of adequate genetic variability in the material. High phenotypic and genotypic coefficient of variation was observed for harvest index and grain yield/plant, while moderate for ear weight, number of ears/plant, number of tillers/plant, peduncle length, 1000 grain weight, biological yield/plant and number of spikelets/ear. High heritability coupled with high genetic advance as percent of mean was exhibited by harvest index, grain yield/plant, number of ears/plant, number of tillers/plant, peduncle length, ear weight, 1000 grain weight, biological yield/plant, number of spikelets/spike and canopy temperature. Grain yield/plant revealed significant positive association with ear weight, number of ears/plant, number of spikelets/spike, harvest index and 1000 grain weight. Harvest index imposed highest direct positive effect on grain yield/plant, followed by biological yield/plant, days to heading and plant height. Hybrids PHW 16-6, PHW 16-29, PHW 16-1, PHW 16-26 and PHW 16-10 were found superior over the best check HD 2967 on the basis of grain yield/plant. The result of present study could be exploited in planning and execution of future breeding programme in hybrid wheat.

A field experiment was conducted during 2015-2016 to find out the effect of agronomic modifications for wheat production in organic farming at Khalsa College Amritsar. The experiment was laid out in a randomized block design with three replications. The treatments consisted of T1 (Flat planting of wheat i.e. control), T2 (Bed planting of wheat), T3 (T2+intercropping gram in center), T4 (T2+intercropping lentil in center), T5 (Paired row of wheat and gram on bed), T6 (Paired row of wheat and lentil on bed), T7 (T5+straw mulching) and T8 (T6+straw mulching). Agronomic modifications related to planting methods, intercropping and mulching significantly affected the plant height, yield attributes, and productivity of wheat crop. Thus, it can be concluded that the agronomic modifications (intercropping and mulching) are an advantageous manipulation for organic farming, especially for staple crops like wheat. The per cent increase in grain yield due to different treatments over control (T1) was 23.59, 22.18, 21.14, 20.05, 19.72, 19.37, 10.92 in trend T7>T8>T3>T4>T5>T6>T2 respectively.

Baby corn is a one group of the specialty maize and now very popular in India too for high nutritional and marketable values. It is mainly grown Kharif season but its sensitivity of high moisture affects its production. Therefore, the present study was carried out in Kharif season-2019 to optimize the establishment method and its nutrient management. The experimental results indicated that ridge planting with application of 75%RDF+25%VC gave significantly higher plant stand, plant height, dry matter accumulation, LAI, CGR, RGR, chlorophyll content, baby corn yield and green fodder yield, however it was very close to 100% RDF. Therefore, the baby corn may be planting on ridges with application of 75%RDF+25%VC for higher baby corn and quality green fodder in Tarai region of Uttarakhand.

Short Note

Calocybe indica strain CI-3 was investigated for mycelial growth on solid as well as on liquid medium. Three media namely Complete Yeast extract Medium (CYM), Potato Dextrose Agar (PDA) and Wheat Extract Agar medium (WEA) were supplemented with three growth regulators Indole-3-acetic acid (IAA), Indole-3-butyric acid (IBA) and Gibberellic acid (GA) @ 10, 25 and 50 ppm each separately. The maximum colony diameter (mm) and growth rate (mm/day) was observed on WEA medium supplemented with IAA (10 ppm) on 5th and 7th day, IBA (10 ppm) on 5th day, IBA (25 ppm) on 7th day, GA (50 ppm) on 7th day and CYM supplemented with GA (50 ppm) on 5th and 7th day. The biomass growth was maximum in broth supplemented with GA for all the media with maximum (24.2 g/L) in complete yeast extract broth.