Identification and mapping of stable QTL with main and epistasis effect on rice grain yield under upland drought stress

Table 6 Yield improvement of genotypes possessing QTL (QTL +) for grain yield under reproductive stress over lines not possessing QTL (QTL -) for the two populations

QTL	Trial	Markers	QTL (+)	QTL (−)	MTU1010/IR64	Yield improvement (%)
Kali Aus/2*MTU1010
qDTY _1.2	2012 DS RS	RM315	568	441	465	22
		RM259	535	458	465	15
		RM259 + RM315	614	348	465	32
	2013 DS RS	RM315	483	406	419	15
		RM259	468	438	419	12
		RM259 + RM315	555	392	419	33
qDTY _2.2	2012 DS RS	RM211	528	428	465	14
		RM263	505	440	465	9
		RM211 + RM263	559	351	465	20
	2013 DS RS	RM211	473	451	419	13
		RM263	482	446	419	15
		RM211 + RM263	504	419	419	20
qDTY _1.2	2012 DS RS	RM259 + RM315	586	350	465	26
₊		+
qDTY _2.2		RM211 + RM263
qDTY _1.2	2013 DS RS	RM259 + RM315	557	406	419	33
₊		+
qDTY _2.2		RM211 + RM263
*Kali Aus/2IR64**
qDTY _1.3	2012 DS RS	RM315	576	377	495	16
		RM488	554	418	495	12
		RM488 + RM315	590	332	495	19
	2013 DS RS	RM315	395	350	335	18
		RM488	409	343	335	22
		RM488 + RM315	426	366	335	27
qDTY _2.3	2012 DS RS	RM573	570	418	495	15
		RM263	526	440	495	6
		RM573 + RM263	586	320	495	18
	2013 DS RS	RM573	418	362	335	24
		RM263	429	357	335	28
		RM573 + RM263	452	322	335	35
qDTY _1.3	2012 DS RS	RM488 + RM315	588	326	495	19
₊ qDTY _2.3		+
		RM573 + RM263
qDTY _1.3	2013 DS RS	RM488 + RM315	439	344	335	31
₊ qDTY _2.3		+
		RM573 + RM263

2012 DS RS: 2012 dry season reproductive stress, 2013 DS RS: 2013 dry season reproductive stress, 2012 DS NS: 2012 dry season non-stress, 2013 DS NS: 2013 dry season non-stress.
QTL (+): genotypes possessing QTL donor allele for grain yield under reproductive stress.
QTL (−): genotypes not possessing QTL donor allele for grain yield under reproductive stress.

ISSN: 2730-6844