000			02766nab|a22003857a|4500
999			_c63052 _d63044
001			63052
003			MX-TxCIM
005			20211006075158.0
008			201812s2018||||xxk|||p|op||||00||0|eng|d
022			_a2045-2322 (Online)
024	8		_ahttps://doi.org/10.1038/s41598-018-20116-7
040			_aMX-TxCIM
041			_aeng
100	1		_aSandhu, N. _98752
245	1	0	_aPositive interactions of major-effect QTLs with genetic background that enhances rice yield under drought
260			_aLondon (United Kingdom) : _bNature Publishing Group, _c2018.
500			_aPeer review
500			_aOpen Access
520			_aTo improve the grain yield of the lowland-adapted popular rice variety Samba Mahsuri under reproductive-stage drought (RS) and to understand the interactions between drought QTLs, two mapping populations were developed using marker-assisted selection (MAS) and marker-assisted recurrent selection (MARS). The mean grain yield of pyramided lines (PLs) with q DTY 2.2 + q DTY 4.1 in MAS is significantly higher under RS and irrigated control than lines with single QTLs. Among MARS PLs, lines with four qDTYs (qDTY 1.1 + qDTY 2.1 + qDTY 3.1 + qDTY 11.1 ) and two QTLs (qDTY 1.1 + qDTY 11.1 ) yielded higher than PLs with other qDTY combinations. The selected PLs showed a yield advantage of 0.3-2.0 t ha-1 under RS. An allelic profile of MAS PLs having same qDTY combination but with different yields under drought was studied. Hierarchical clustering grouped together the selected lines with high yield under drought. Epistasis test showed the interaction of qDTY 4.1 and qDTY 9.1 loci with qDTY 7.1 significantly increased yield under drought and all the lines with higher yield under drought possessed the conserved region of qDTY 7.1 on chromosome 7. The positive interactions among QTLs, effectiveness of QTLs in different backgrounds, introgression of DTY QTLs together with resistance to biotic stresses shall help enhance grain yield under RS.
546			_aText in English
650		7	_aQuantitative Trait Loci _2AGROVOC _91853
650		7	_aPlant Genetics _2AGROVOC _99025
650		7	_aRice _gAGROVOC _2 _91243
650		7	_aDrought _2AGROVOC _91080
650		7	_aMarker-assisted selection _2AGROVOC _910737
700	1		_aDixit, S. _92966
700	1		_aMallikarjuna Swamy, B.P. _92965
700	1		_aVikram, P. _8I1705725 _9785 _gGenetic Resources Program
700	1		_aVenkateshwarlu, C. _917717
700	1		_aCatolos, M. _917718
700	0		_aArvind Kumar _94125
773	0		_tNature Scientific Reports _gv. 8, no. 1, art. 1626 _dLondon (United Kingdom) : Nature Publishing Group, 2018. _wa58025 _x2045-2322
856	4		_yOpen Access through DSpace _uhttps://hdl.handle.net/10883/21091
942			_cJA _n0 _2ddc