Identifying drought tolerant genotypes of rice

A field screening of thirty four drought tolerant rice genotypes was conducted during Kharif 2017 and Kharif 2018 with the objective to identify different genotypes under drought stress condition. Significant variation was observed among genotypes for all studied traits including leaf rolling, leaf drying and relative water content.

8p trinhthamhodang1216 19-11-2020 6 1   Download

To encourage rice-rice cropping system, enhance yield and livelihood in rainfed areas, Drought Breeding Network, Cuttack conducted “Participatory Varietal Selection (PVS)” trial at Samian and Berna village under drought prone rainfed condition during wet season. The management practices were consistent with local crop husbandry used by farmers and evaluations were made by the farmers.

7p quenchua8 29-09-2020 9 1   Download

Drought is a major constraint in rice- growing areas of Asia. Identification of genomic regions containing QTLs governing drought tolerance traits is inevitable for developing novel genotypes with enhanced drought tolerance. A RIL population of 122 lines derived from a cross of Daggaddeshi/Danteswari was used for identification of QTL governing traits associated with yield was used in the study. A new QTL (qDTY12.2) linked to grain yield was identified in both stress and non-stress conditions.

9p kethamoi7 26-08-2020 13 2   Download

A potted experiment was carried out in the net house of the Plant Breeding Unit, TRRI, Aduthurai in 2020 to screen and evaluate the performance of diverse rice genotypes for anaerobic germination ability with a view to select the suitable genotypes for multiple stress tolerance (drought and anaerobic germination) that will fit into the existing niche in the DSR. The aim of this experiment is to identify short duration genotypes with early vigour and potential to germinate under anaerobic condition.

10p nguaconbaynhay7 15-08-2020 12 1   Download

Three target points in acid sulfate soils have been identified as: 1) Aluminum (Al) toxicity; 2) Iron (Fe) toxicity; 3) Phosphorous (P) deficiency; and 4) Droughts at the seedling stage. The exploitation of gene pools from wild rice species fruitfully obtained a true introgression of desirable traits into high yielding varieties (HYVs), such as AS996 (IR64/Oryza rufipogon), which are tolerant to Al-toxicity, have short durations, high yields, and adaptability to acid sulfate soils.

6p caygaocaolon1 13-11-2019 41 0   Download