Above and below-ground growth, accumulated dry matter and nitrogen remobilization of wheat ( Triticum aestivum ) genotypes grown in PVC tubes under well- and deficit-watered conditions.

Autor: Zhiipao RR; Agronomy, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India., Pooniya V; Agronomy, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India., Kumar D; Agronomy, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India., Biswakarma N; Agronomy, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India.; Agronomy, G.D. Goenka University, Gurugram, Haryana, India., Shivay YS; Agronomy, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India., Dass A; Agronomy, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India., Kumar Bainsla N; Genetics, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India., Lakhena KK; Agronomy, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India., Pandey RK; Plant Physiology, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India., Burman A; Agronomy, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India., Bhatia A; Environmental Science, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India., Jat RD; Agronomy, Chaudhary Charan Singh Haryana Agricultural University (CCSHAU), Hisar, Haryana, India., Govindasamy P; Agronomy, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India., Swarnalakshmi K; Microbiology, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India., Das K; Agronomy, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India.; ICAR-Central Research Institute for Jute and Allied Fibers, Barrackpore, West Bengal, India., Choudhary RL; Agronomy, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India.; ICAR-Directorate of Rapeseed-Mustard Research, Bharatpur, Rajasthan, India., Babu S; Agronomy, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India.
Jazyk: angličtina
Zdroj: Frontiers in plant science [Front Plant Sci] 2023 Mar 07; Vol. 14, pp. 1087343. Date of Electronic Publication: 2023 Mar 07 (Print Publication: 2023).
DOI: 10.3389/fpls.2023.1087343
Abstrakt: The continuing decline in water resources under the ever-changing climate compels us to re-orient our focus to a more sustainable practice. This study investigates the performance of Triticum aestivum wheat genotypes viz. HD-2967, HD-3086, HD-3249, DBW-187, and HD-3226 under well- and deficit-watered conditions for their root-traits, biomass and nitrogen accumulation and remobilization, and water use efficiencies, grown in PVC-tubes. The genotypes HD-2967, HD-3086, HD-3249, DBW-187, and HD-3226 under well-watered (WW) resulted in 36, 35, 38, 33, and 42% more grain yield compared to deficit-watered (DW). Among the genotypes, HD-3249 had the highest grain yield under both well- and deficit-watered conditions. Compared to DW, the WW had 28%, 30%, and 28% greater root length, biomass, and root length density at flowering {102 days (d), Z 61 }, while among the genotypes, HD-3249 had relatively greater root-traits. At flowering (Z 61 ) and maturity (132 d, Z 89 ), genotypes under WW accumulated 30-46% and 30-53%, respectively greater shoot biomass over the DW. Furthermore, the shoot biomass remobilised for HD-2967, HD-3086, HD-3249, DBW-187, and HD-3226 under the WW was 32, 37, 39, 35, and 35% greater than the DW. The nitrogen partitioning to different plant parts at flowering (Z 61 ) and maturity (Z 89 ) was significantly greater with the WW than with DW. The total nitrogen- remobilized and contribution to grain-N under the WW was 55, 58, 52, 53, 58% and 9, 19, 15, 17, 17% greater than the DW for the genotypes HD-2967, HD-3086, HD-3249, DBW-187, and HD-3226. The irrigation water use efficiency (WUE) at flowering (Z 61 ) was more under the deficit-watered, but the biomass and grain total WUE was improved with the well-watered condition. Hence, it is apparent that proper scheduling of irrigation and N applications, along with the adoption of a genotype suited to a particular environment, will result in better WUE and grain yields, along with better utilization of scarce resources.
Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
(Copyright © 2023 Zhiipao, Pooniya, Kumar, Biswakarma, Shivay, Dass, Kumar Bainsla, Lakhena, Pandey, Burman, Bhatia, Jat, Govindasamy, Swarnalakshmi, Das, Choudhary and Babu.)
Databáze: MEDLINE
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