Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Doctorat → Inde → 2013 → Agro physiological traits for drought tolerance in pearl millet ( Pennisetum glaucum L.)

Chaudhary Charan Singh Haryana Agricultural University (2013)

Agro physiological traits for drought tolerance in pearl millet ( Pennisetum glaucum L.)

Yadav, Arvind Kumar

Titre : Agro physiological traits for drought tolerance in pearl millet ( Pennisetum glaucum L.)

Auteur : Yadav, Arvind Kumar

Université de soutenance : Chaudhary Charan Singh Haryana Agricultural University

Grade : Doctor of Philosophy (PhD) 2013

Résumé présenté dans KrishiPrabha (Indian Agricultural Doctoral Dissertations Repository)

The present experiment entitled, “Agro physiological traits for drought tolerance in pearl millet (Pennisetum glaucum L.)” was conducted at Research Farm Area of Crop Physiology, Department of Agronomy, Chaudhary Charan Singh Haryana Agricultural University, Hisar during kharif seasons of 2011 and 2012. The performance of four genotypes viz., HHB 67 ‘Improved’, HHB 197, HHB 223 and HHB 234 were tested under two environments (rainfed and irrigated) in factorial randomized block design with three replications.

All the phenological events except days taken to emergence and five leaf stages were early under rainfed condition than irrigated situation. Among the genotypes, HHB 67 ‘Improved’ was earliest to reach various phenophases than all other genotypes. The growth parameters i.e., plant height (cm), total number of tillers plant-1, dry matter accumulation (g plant-1), leaf area and crop growth indices (LAI, LAD, NAR and CGR) were significantly higher in the irrigated condition than rainfed environment. All the growth parameters (plant height, total number of tillers plant-1, dry matter accumulation plant-1 and leaf area) were significantly higher in genotype HHB 223 under irrigated condition, whereas under rainfed environment these values were better in the genotype HHB 234. Root length was observed deeper under rainfed environment, whereas root biomass was more under irrigated condition. The longer root and higher biomass were noticed in the genotype HHB 234 under rain fed environment whereas under irrigated condition these were more in the HHB 223 and HHB 197. Plant water relation studies showed more values of leaf water potential and relative water content (%), thereby resulting in cooler canopy under irrigated condition than rainfed situation and genotype HHB 234 had reflected more values of these traits and proved to be best yielder under the rainfed environment. Under irrigated condition, genotype HHB 223 had exhibited better plant water status and it was ultimately reflected in terms of yield also. Grain yield and its attributes (earhead bearing tillers, earhead length, earhead girth and test weight) were significantly better under irrigated condition than rain fed situation. The genotype HHB 223 recorded higher number of tillers, earhead length, earhead girth, test weight and grain chaff ratio, grain, stover and biological yields under irrigated condition whereas under rainfed condition, these were higher in genotype HHB 234 as compared to other genotypes. Zinc and iron content were significantly more under rainfed situation than the irrigated condition and genotype HHB 67 ‘Improved’ had the maximum zinc and iron content in the grain to other tested genotypes.

Mots clés : Pearl Millet, Drought tolerance, rainfed, irrigated

Lien vers le site KrishiPrabha (Indian Agricultural Doctoral Dissertations Repository)

Page publiée le 26 janvier 2015, mise à jour le 15 février 2021