caa a22 4500 477135544 CHVBK 20180405111716.0 cr unu---uuuuu 170330e19970601xx s 000 0 eng 10.1023/A:1003092432309 doi (NATIONALLICENCE)springer-10.1023/A:1003092432309 Heterosis and combining ability for plant height and its components in hybrid wheat with Triticum timopheevi cytoplasm [Elektronische Daten] [Youchun Li, Junhua Peng, Zhongqi Liu] The heterosis and combining ability for plant height and its components of hybrid wheat were investigated in an incomplete diallel experiment including 5 CMS lines and 4 restorer lines. The results showed that heterosis (HS) and heterobeltiosis (HBS) occurred in plant height (PH) and length of the first internode (LFI), second internode (LSI), third internode (LTI), basal internode (LBI) and the spike (LS) of hybrids, but their values varied among crosses and characters; the HS and HBS of LBI were larger than those of other characters, the HS and HBS of LSI and LTI contributed a lot to those of PH. There were significant relationships between internode lengths and PH for specific combining ability (SCA) and general combining ability (GCA), and among lengths of the adjacent internodes for SCA and/or GCA effects. However, the relationships of LS with the lengths of internodes and PH were insignificant for GCA, SCA, HS and HBS. The SCA effects were more important than GCA effects for LFI, the reverse was true for LSI, LTI, LS and PH, and the SCA effects was nearly equal to the GCA effects for LBI. So, LFI was mainly influenced by non-additive effect of genes, while LSI, LTI, LS and PH were mainly controlled by additive gene effects, LBI was controlled equally by additive and non-additive effects of genes. The genes that control the length of specific internode not only affect PH, but also the length of the adjacent internode. The genetic system in charge of lengths of internodes and plant height is independent of that for length of spike. Thus, it is possible to develop new wheat cultivars or hybrid combinations having long spike but dwarf plant height. Kluwer Academic Publishers, 1997 hybrid wheat nationallicence Triticum aestivum nationallicence plant height nationallicence internode length nationallicence heterosis nationallicence combining ability nationallicence Li Youchun College of Agriculture, Oceanic Marine University, Huguang Yan, Zhanjiang City, 524088, Guangdong Province, China aut Peng Junhua College of Agriculture, Oceanic Marine University, Huguang Yan, Zhanjiang City, 524088, Guangdong Province, China aut Liu Zhongqi Crop Institute, Sichuan Academy of Agricultural Sciences, Chengdu City, 610066, Sichuan Province, China aut Euphytica Kluwer Academic Publishers 95/3(1997-06-01), 337-345 0014-2336 95:3<337 1997 95 10681 https://doi.org/10.1023/A:1003092432309 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003092432309 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Youchun College of Agriculture, Oceanic Marine University, Huguang Yan, Zhanjiang City, 524088, Guangdong Province, China aut NATIONALLICENCE 700 1- Peng Junhua College of Agriculture, Oceanic Marine University, Huguang Yan, Zhanjiang City, 524088, Guangdong Province, China aut NATIONALLICENCE 700 1- Liu Zhongqi Crop Institute, Sichuan Academy of Agricultural Sciences, Chengdu City, 610066, Sichuan Province, China aut NATIONALLICENCE 773 0- Euphytica Kluwer Academic Publishers 95/3(1997-06-01), 337-345 0014-2336 95:3<337 1997 95 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer