caa a22 4500 477135501 CHVBK 20180405111716.0 cr unu---uuuuu 170330e19970601xx s 000 0 eng 10.1023/A:1003052400082 doi (NATIONALLICENCE)springer-10.1023/A:1003052400082 Trisomic analysis of a strong photoperiod-sensitivity gene E1 in rice (Oryza sativa L.) [Elektronische Daten] [Yutaka Okumoto, Takatoshi Tanisaka] Recent genetic analyses on heading-time of rice indicated that almost all the well-adapted varieties in the temperate zone carry a strong photoperiod-sensitivity gene E1, a dominant allele of E1 locus. In order to identify the chromosome on which E1 is located, a trisomic analysis was made using two primary trisomic series originating from the japonica varieties, Nipponbare and Kinmaze, respectively. The Nipponbare and Kinmaze series were crossed with heading-time tester lines, EG0 and EG3, respectively, both of which did not carry the E1. The F2 populations for chromosome 1, 2, and 3 could not be analyzed due to lack of seed. All the other F2 populations showed distinct segregation into early-type and late-type plants caused by the E1 locus segregation, which suggested that the trisomic analysis for E1 locus could be efficiently made. Both disomic and trisomic groups in the F2 population from the cross of the trisomic line for chromosome 7 × EG0 showed a segregation ratio significantly different at the 1% level from a ratio of 1 [e1e1; early]: 3 [E1e1, E1E1; late]. This suggested that E1 was located on chromosome 7. Subsequently, the linkage analysis was made using three morphological marker genes on chromosome 7. It was recognized that E1 was linked to rfs (rolled fine strip gene) and slg (slender glume gene) with recombination values of 16.3 ± 5.88 and 9.1 ± 4.72%, respectively. From these results, it can be concluded that E1 is most likely to be located on chromosome 7. Kluwer Academic Publishers, 1997 gene location nationallicence heading time nationallicence Oryza sativa nationallicence photoperiod sensitivity nationallicence rice nationallicence trisomic analysis nationallicence Okumoto Yutaka Plant Breeding Laboratory, Faculty of Agriculture, Kyoto University, 606-01, Kyoto, Japan aut Tanisaka Takatoshi Plant Breeding Laboratory, Faculty of Agriculture, Kyoto University, 606-01, Kyoto, Japan aut Euphytica Kluwer Academic Publishers 95/3(1997-06-01), 301-307 0014-2336 95:3<301 1997 95 10681 https://doi.org/10.1023/A:1003052400082 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003052400082 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Okumoto Yutaka Plant Breeding Laboratory, Faculty of Agriculture, Kyoto University, 606-01, Kyoto, Japan aut NATIONALLICENCE 700 1- Tanisaka Takatoshi Plant Breeding Laboratory, Faculty of Agriculture, Kyoto University, 606-01, Kyoto, Japan aut NATIONALLICENCE 773 0- Euphytica Kluwer Academic Publishers 95/3(1997-06-01), 301-307 0014-2336 95:3<301 1997 95 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer