000			00595nab|a22002177a|4500
999			_c62176 _d62168
001			62176
003			MX-TxCIM
005			20200703193908.0
008			200624s2020||||xxu|||p|op||||00||0|eng|d
022			_a1542-7528
022			_a1542-7536 (Online)
024	8		_ahttps://doi.org/10.1080/15427528.2020.1772435
040			_aMX-TxCIM
041			_aeng
100	1		_aSingh, N. _914436
245	1	0	_aStress physiology and metabolism in hybrid rice. II. Impact of organic manures on anthesis and grain growth under drought conditions
260			_aUSA : _bTaylor and Francis, _c2020.
500			_aPeer review
520			_aSoil-water availability is the major yield determinant of rice (Oryza sativa L.). The objective of this investigation was to study the effects of organic manures vs. inorganic fertilizers on phenological, physiological and yield parameters under drought imposed at various reproductive stages of hybrid rice cv. NDRH-2. The vulnerability of various reproductive stages to drought was ranked as: gametogenesis>anthesis>grain-filling>dough formation>post-dough formation>whole grain. Drought-caused spikelet sterility was related more to injury to palea than to lemma, though the grain growth continued even after the death of palea and/or lemma. Organic manures enhanced the survival of flag leaf (55%) and second leaf (40%) against 31% in plants inorganically fertilized; and increased the number of filled grains by reducing spikelet sterility. Drought at 10 days before anthesis up to 5 days after it proved most harmful in the inorganically fertilized soil (IFS, i.e., control) than in the organically fertilized soil (OFS, i.e., green manure, compost). The net assimilation rate (NAR) varied from 925 (green manure) to 900 mg m−2 day−1(compost) against 888 mg m−2 day−1 in the control. The relative growth rate (RGR) was 4.6 for green manure and 4.4 mg g−1 day−1 for compost, which were higher than the RGR for the control (4.1 mg g−1 day−1). Grain yields [15.9 g (green manure) to 15.4 g (compost) hill−1 in OFS] were higher than the IFS grain yield (13.5 g hill−1), with the harvest indices in OFS [34.4% (green manure) to 34% (compost)] being higher than that in IFS (32.2%) at 10 days before heading. Thus, the use of organic manures enhanced drought tolerance, which minimized the reduction in NAR, RGR, and spikelet sterility, thereby stabilized grain yield under drought.
546			_aText in English
650		7	_aFlowering _2AGROVOC _93729
650		7	_aBiomass _2AGROVOC _91897
650		7	_aGrain _2AGROVOC _91138
650		7	_aOrganic fertilizers _2AGROVOC _91740
650		7	_aDrought stress _2AGROVOC _91081
650		7	_aWater potential _2AGROVOC _910495
700	1		_aSingh, C.A.K. _914437
700	1		_aSingh, S. _914438
773	0		_gIn press _dUSA : Taylor and Francis, 2020. _x1542-7528 _tJournal of Crop Improvement _w94851
942			_cJA _n0 _2ddc