Biomass production, water use efficiency and nutritional value parameters of sorghum (Sorghum bicolor L.) genotypes as affected by seed hydro-priming and transplanting

Q3 Agricultural and Biological Sciences Acta Biologica Szegediensis Pub Date : 2022-02-23 DOI:10.14232/abs.2021.65.171-184

Isaac Mirahki, M. Ardakani, F. Golzardi, F. Paknejad, A. Mahrokh

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引用次数: 2

Abstract

To investigate hydropriming and transplanting effect on biomass and nutritional content of forage sorghum, a two-year field experiment was conducted in the semiarid condition of Iran. Experimental factor consisted of planting dates (July-1st, July-11th, July-23rd, August-1st) in the main plot and the factorial combination of planting methods (direct planting, hydropriming, transplanting) with cultivars (Speedfeed and Pegah) in the subplot. Planting date postponement from 1st of July to 10th of July, 23rd of July, and 1st of August, respectively, caused 16.1, 32.5 and 47.2% reduction in dry matter yield (DMY) and 7.4, 20.2, and 35.1% reduction in water use efficiency of DMY production (WUEDMY). Hydropriming and transplanting produced 23.6 and 22.4% more DMY, 24.5 and 21.8% more WUEDMY, 24 and 16.3% more crude protein yield, 22.7 and 20.9% more digestible dry matter (DDM) yield, and 22.2 and 20.1% more metabolic energy (ME) yield, compared to the direct planting. Hydropriming compared to direct planting caused 29% increase in plant growth rate and utilized growing season more productively than transplanting for DMY production. Conclusively, hydropriming and transplanting compensated for delay in planting through enhancing and accelerating germination and plant development but, applying hydropriming on Speedfeed and planting in July-1st caused the highest DMY, WUEDMY and the yield of nutritive parameters.

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种子灌浆和移栽对高粱生物量、水分利用效率和营养价值参数的影响

为了研究水培和移栽对饲草高粱生物量和营养含量的影响，在伊朗半干旱条件下进行了为期两年的田间试验。试验因子包括主地块的种植日期（7月1日、7月11日、7日至23日、8月1日），以及子地块种植方法（直接种植、水培、移植）与品种（Speedfeed和Pegah）的因子组合。种植日期从7月1日推迟到7月10日、7月23日和8月1日，分别导致干物质产量（DMY）下降16.1、32.5和47.2%，DMY生产的水分利用效率（WUEDMY）下降7.4、20.2和35.1%。与直接种植相比，水培和移栽分别增产23.6%和22.4%、24.5%和21.8%、24%和16.3%的粗蛋白产量、22.7%和20.9%的可消化干物质产量以及22.2%和20.1%的代谢能产量。与直接种植相比，水力引发使植物生长率提高了29%，并且比移植更有效地利用生长季节生产DMY。总之，水培和移栽通过促进和加速发芽和植株发育来弥补种植延迟，但在Speedfeed上进行水培并于7月1日种植，DMY、WUEDMY和营养参数产量最高。

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来源期刊

Acta Biologica Szegediensis Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)

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1.00

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0.00%

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期刊介绍： Acta Biologica Szegediensis (ISSN 1588-385X print form; ISSN 1588-4082 online form), a member of the Acta Universitatis Szegediensis family of scientific journals (ISSN 0563-0592), is published yearly by the University of Szeged. Acta Biologica Szegediensis covers the growth areas of modern biology and publishes original research articles and reviews, involving, but not restricted to, the fields of anatomy, embryology and histology, anthropology, biochemistry, biophysics, biotechnology, botany and plant physiology, all areas of clinical sciences, conservation biology, ecology, genetics, microbiology, molecular biology, neurosciences, paleontology, pharmacology, physiology and pathophysiology, and zoology.