Terminal heat tolerance

High temperature is a major environmental stress factor limiting wheat (Triticum aestivum L.) productivity. Improvement of heat tolerance in wheat is an important breeding objective. The present investigation was carried out to evaluate and identify terminal heat tolerant bread wheat genotypes on the basis heat susceptibility index.

8p caygaocaolon11 21-04-2021 14 2   Download

A field experiment was conducted in Rabi 2015 in a randomized block design with the objective to screen advanced breeding lines (genotypes) of Indian mustard (Brassica juncea L. Czern and Coss) for different physiological parameters viz, chlorophyll content, membrane stability index (MSI %), relative water content (RWC %) and electrolyte leakage and yield related to terminal heat tolerance. The study indicated that genotypes, ‘Pusa Bold’, ‘NRCHB-101’ and ‘PRO-5222’ had tolerance to high temperature at terminal stage.

6p caygaocaolon8 07-11-2020 8 3   Download

The investigation was conducted on three mungbean [Vigna radiata (L.) Wilczek] genotypes namely MH-421, MH-318 and Basanti genotypes to study their biochemical, and yield response in relation to terminal heat stress tolerance. The plants were raised in earthen pots (30 cm diameter) filled with 5.5 kg of dune sand (Typic Torrispamments) under screen house conditions. High temperature stress was given by manipulation of sowing dates i.e. normal sown (12th March, 2013) and late sown (29th March, 2013).

12p kethamoi7 26-08-2020 17 1   Download

Wheat (Triticum aestivum) is the second most important food crop in India only after rice and providing food for about 2 billion people which is about 36% of the world population. Annual production of wheat and rice together should be increase by 2 mt every year in order to maintain self-sufficiency for wheat in India. The demand of wheat is projected to be 109 mt by 2020 in India. Globally, the demand for wheat by the year 2020 is forecasted to be around 950 mt.

14p chauchaungayxua6 26-06-2020 9 1   Download

A study was conducted at Wheat Breeding section, RPCAU, Pusa, Samastipur, Bihar during rabi 2016-17 to evaluate the genotypes of bread wheat (Triticum aestivum L.) for terminal heat tolerance. Observations were recorded on plant height, number of tillers per plant, flag leaf area, days to fifty per cent flowering, canopy temperature, relative water content, spike length, number of grains per spike, spike fertility, chlorophyll content, days to maturity, thousand grain weight, harvest index, yield per plant, thousand grain weight susceptibility index and heat susceptibility index.

9p gaocaolon5 14-06-2020 14 2   Download

Wheat (Triticum aestivum L.), a staple food crop is of great commercial importance. Its production is restricted due to various abiotic stresses. There are indications that the wheat production is consistently limited by terminal heat stress. Here, performance of forty genotypes of wheat was undertaken for assessment of direct selection parameters (variability, heritability and genetic advance) and their relation with heat tolerance.

11p trinhthamhodang5 16-05-2020 25 1   Download

In India, wheat is cultivated on around 29.8 mha that produces 92.5 mt with an average productivity of 3.1 t/ha. But in recent scenario of climate change our wheat cultivars succumb to the grave problem of terminal heat stress leading to substantial reduction in its production and productivity. Sixteen genotypes of wheat were used for assessing the molecular diversity for terminal heat stress tolerance against 14 SSR markers linked to the trait of interest. Results revealed that amplified alleles ranged from185 bp to 230 bp.

11p trinhthamhodang1212 06-04-2020 13 2   Download

Wheat is self-pollinated annual temperate crop extensively grown as staple food in the world. Thirteen genetically diverse heat tolerance wheat varieties viz.HD3091, DBW90, UP2843, WH1124, HPW211, WH1021, CBW12, MASC6272, JOB666, HD2329, WAXWING, HD2891, HD2961, and three tester HD2967, WH1105, HD3059 was crossed in line x tester mating design excluding reciprocals.

6p cothumenhmong4 25-03-2020 10 2   Download

The investigation entitled “Effect of terminal heat stress on variability in physiological traits of Indian mustard (Brassica juncea L.) due to late sown situation” was conductedrabi season during 2017-18 and 2018-19 at Oil seed research Farm Kalyanpur of C. S. Azad University of Agriculture and Technology, Kanpur (U.P.) in randomized block design with three replications and twelve Indian mustard genotype. Physiological parameters i.e.

9p nguaconbaynhay3 07-02-2020 18 0   Download

Lentil (Lens culinaris Medikus) is an important winter season grain legume crop, mostly grown on residual soil moisture and is frequently subjected to terminal drought and heat stress, that results in low and variable seed yields. Moreover, delay in sowing even for two weeks causes the reproductive and grain filling phase of this crop to coincide with a period of substantially high temperature resulting in yield losses by reduced seed set, seed weight and accelerated senescence.

10p kethamoi2 14-12-2019 24 0   Download