Characterization of a wheat–tetraploid Thinopyrum elongatum 1E(1D) substitution line K17–841-1 by cytological and phenotypic analysis and developed molecular markers

Table 1 Agronomic traits of K17–841-1 and its parental lines

Lines	Year	Plant height (cm)	Tiller number	Spike length (cm)	Spikelet per spike	Grains per spike	Thousand-grain weight (g)	Seed setting rate (%)
8801	2017–2018	143.6 ± 6.0a	8.2 ± 2.3a	15.5 ± 2.1a	17.5 ± 1.2c	39.7 ± 2.9c	24.5 ± 0.5b	84.0 ± 8.4b
8801	2018–2019	132.4 ± 4.5a	8.5 ± 0.6a	17.3 ± 2.1a	17.5 ± 1.3b	31.3 ± 5.0c	29.3 ± 0.2b	68.5 ± 12.8b
SM482	2017–2018	82.5 ± 4.3c	9.2 ± 1.6a	13.4 ± 1.3b	22.0 ± 2.1b	63.3 ± 9.4b	44.7 ± 0.2a	99.6 ± 0.9a
SM482	2018–2019	79.0 ± 5.2c	8.8 ± 0.4a	12.5 ± 0.9b	18.6 ± 1.7ab	58.2 ± 7.9b	43.2 ± 0.8a	97.9 ± 2.3a
SM921	2017–2018	86.1 ± 3.1bc	9.3 ± 2.3a	13.9 ± 1.4ab	24.7 ± 2.9a	84.3 ± 12.3a	44.5 ± 2.0a	99.4 ± 1.6a
SM921	2018–2019	87.7 ± 2.6b	4.8 ± 1.3b	13.2 ± 0.8b	20.6 ± 0.9a	72.8 ± 8.6a	38.6 ± 0.8b	92.7 ± 3.2a
K17–841-1	2017–2018	89.9 ± 4.2b	8.2 ± 1.3a	13.5 ± 0.8b	19.5 ± 1.0c	63.0 ± 8.2b	44.6 ± 1.7a	95.7 ± 1.3a
K17–841-1	2018–2019	94.1 ± 4.8b	9.3 ± 1.8a	14.0 ± 0.6b	17.8 ± 1.0b	51.8 ± 11.0b	44.3 ± 1.2a	93.8 ± 5.4a

Data in the columns indicate means ± standard errors
Lowercase letters following the means indicate significant differences at P < 0.05 as determined by the least significant differences