EurekaMag.com logo
+ Site Statistics
References:
53,623,987
Abstracts:
29,492,080
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Genetic analysis of heading time in a cross between two indica varieties with inhibitor genes for photoperiod sensitivity



Genetic analysis of heading time in a cross between two indica varieties with inhibitor genes for photoperiod sensitivity



Japanese Journal of Breeding 43(1): 101-106



The previous studies showed that an early Indica variety Culture 340 from India carries a gene for photoperiod sensitivity with large effects of the Se-1 locus and a recessive inhibitor gene (i-Se-1) for sensitivity as well, causing early heading even under long day conditions (IMUTA et al. 1991). On the other hand, an Indica variety Nanjing 11 from China was also presumed to carry a recessive inhibitor gene for Se-1 gene (ARAKI 1988). The present study was undertaken to determine if these two Indica varieties have the same inhibitor gene for Se-1, by investigating the inheritance of heading time in the F-1 and F-2 populations of a cross between Culture 340 and Nanjing 11 at Tsukuba in 1990. The heading time of the F-1 was later than that of midparent and showed partial dominance for lateness (Fig. 1). In the F-2 population, the variation of heading time showed a clear-cut bimodal distribution with two peaks corresponding to the heading time of parents and no transgressive segregation for late heading (Fig. 1). These results indicated that Culture 340 and Nanjing 11 have the same inhibitor gene (i-Se-1). Assuming a class boundary at 96 days from sowing in the F-2, the observed ratio showed a good fit to a 3 late:1 early ratio, suggesting one dominant gene for lateness. The F-3 lines selected from both the early and late F-2 plants were grown under the 9- and 14-hour photoperiod treatments, to investigate their photoperiod sensitivities (Fig. 2). The F-3 lines selected from the late F-2 plants showed a photoperiod sensitivity similar to that of Nanjing 11. The result showed that Nanjing 11 has a pair of photoperiod sensitive gene. The genetic analysis was performed to determine if this gene is at the Se-1 locus, by using segregation of genotypes for phosphoglucose isomerase isozyme locus Pgi-2, which is closely linked with the Se-1 locus. Since the Pgi-2 alleles were not associated with the two classes of heading time (Fig. 2), it was concluded that this gene is independent of Se-1, and the gene isn't suppressed by the inhibitor gene. This new photoperiod-sensitive gene was designated Se-4 (t).

(PDF 0-2 workdays service: $29.90)

Accession: 002390188

Download citation: RISBibTeXText



Related references

Genetic analysis of heading time transgression of F1 between Lunhui 422 and indica varieties. Chinese Journal of Rice Science 9(1): 21-26, 1995

Identification of a recessive inhibitor for photoperiod sensitivity gene, Se-1, in photoperiod-insensitive varieties of indica type rice. Special Publication Taichung District Agricultural Improvement Station ( 35): 93-100, 1994

Genetic studies of yielding capacity and adaptability in crop plants. 2. Analysis of genes controlling heading time in Taichung 65 and other rice varieties. Bot. Bull. Acad. sin., Taipei. 7: 2, 54-70, 1966

Analysis of photoperiod-sensitivity genes in Minghui63, an restorer line of indica rice(Oryza sativa L.). Yi Chuan Xue Bao 30(9): 804-810, 2003

Genetic analysis of heading time and grain filling period in barley hordeum vulgare 2. a diallel cross analysis of heading maturing time and grain filling period. Research Reports of the Rural Development Administration (Suweon) 27(CROPS): 100-113, 1985

Analysis of genes controlling heading time in Taichung 65 and other rice varieties. Annual Report of the National Institute of Genetics, Japan, 1966. 16, 70, 1966

Studies on the changes in heading time in relation to duration of photoperiod of two winter varieties of rice. Acta Botanica Indica 10(1): 40-42, 1982

QTL analysis of photoperiod sensitivity in common buckwheat by using markers for expressed sequence tags and photoperiod-sensitivity candidate genes. Breeding Science 61(4): 394-404, 2012

Basic vegetative growth and photoperiod sensitivity of heading-time mutants induced in rice. Japanese Journal of Breeding 42(3): 657-668, 1992

Heading-time genes control photoperiod insensitivity of rice cultivar Norin 20. International Rice Research Notes 21(1): 15-16, 1996

Studies on heading characteristics of rice related to photoperiod sensitivity. 1. Effects of photoperiodic induction of heading. Bulletin of the College of Agriculture and Veterinary Medicine, Nihon University (36): 37-46, 1979

Diallel cross experiment among Sikkimese varieties, indica and japonica testers of rice, Oryza sativa L. II. Heading date and growing period. Japanese Journal of Tropical Agriculture Nettai Nogyo 50(1): 67-73, 1975