Cleistogamy in wheat: genetic control and the effect of environmental conditions

Ueno, K.; Itoh, Hirotake

doi:10.1007/bf03543455

Cited by 17 publications

(9 citation statements)

References 5 publications

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“…1981; Khattab et al . 1982; Chhabra & Sethi 1991; Ueno & Itoh 1997). The probability for random fixation of an allele depends on its initial frequency.…”

Section: Discussionmentioning

confidence: 99%

Cleistogamy in Scutellaria indica (Labiatae): effective mating system and population genetic structure

Sun

1999

Molecular Ecology

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Scutellaria indica is a perennial herb with both chasmogamous (CH) and cleistogamous (CL) flowers on the same plant in some populations, and only CL flowers in other populations. Actual seed production by CH and CL flowers was investigated in populations of S. indica. The average seed set of CL flowers was 19 times higher than CH flowers, indicating much greater fertilization success. The CL seeds were also significantly heavier than the CH seeds. However, the resource cost of producing a CH flower was much higher than that of producing a CL flower. The CH flower was approximately seven times larger, and its pollen/ovule ratio was approximately five times higher than flowers. The level and pattern of genetic diversity at both allozyme and random amplified polymorphic DNA (RAPD) levels were consistent with a predominantly selfing system in the species. The average amount of within-population genetic variation was extremely low (A = 1.025, P = 2.36%, HO = 0.001 and HE = 0.008 based on allozyme data, and P = 8.94% and HE = 0.03 based on RAPD data). At the species level, the estimates of total gene diversity (HT) were 0. 101 based on allozyme data and 0.139 based on RAPD data. A very high level of genetic differentiation occurred between populations (allozyme GST = 0.92 and RAPD GST = 0.81). Genetic drift coupled with predominant cleistogamous selfing apparently played the major role in determining the population genetic structure in S. indica. Although the features associated with CH and CL flower and seed production seem to be sufficient for the evolution of complete cleistogamy in S. indica, random fixation of alternative alleles for dimorphic or complete cleistogamy in small populations could maintain the multiple strategy of chasmogamous and cleistogamous reproduction in the species.

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“…1981; Khattab et al . 1982; Chhabra & Sethi 1991; Ueno & Itoh 1997). The probability for random fixation of an allele depends on its initial frequency.…”

Section: Discussionmentioning

confidence: 99%

Cleistogamy in Scutellaria indica (Labiatae): effective mating system and population genetic structure

Sun

1999

Molecular Ecology

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“…Sumai 3 is a Chinese genetic resource for FHB resistance, and Saikai 165 is an FHB‐resistant open‐flowering cultivar that was selected from the cross between Sumai 3 and Asakazekomugi (a Japanese elite cultivar) at NARO/KARC to increase the FHB resistance of Japanese commercial wheat cultivars (Ban and Suenaga ). U24 was collected from the Xinjiang‐Uygur Autonomous Region of China in 1989 and has closed‐flowering characteristics (Ueno and Itoh ).…”

Section: Methodsmentioning

confidence: 99%

Minor Differences in Anther Extrusion Affect Resistance to Fusarium Head Blight in Wheat

Kubo

Fujita

Kawada

et al. 2012

Journal of Phytopathology

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Fusarium head blight (FHB) remains a serious problem due to yield loss and mycotoxin accumulation in wheat production worldwide. We previously reported that the closed‐flowering (no anther extrusion) characteristic was effective for increasing resistance to FHB infection. In this study, we investigated the relationships between the degree of anther extrusion (AE) and FHB damage using double haploid lines (DHLs), derived from F1 plants from crosses between closed‐flowering and opened‐flowering varieties. These DHLs exhibited various degrees of AE, and the degree of AE was significantly different among DHLs, regardless of the year and environment (pot‐ or field‐grown). FHB severity was the lowest in closed‐flowering DHLs, and DHLs with partially extruded anthers showed significantly higher FHB symptoms than those with closed‐flowering phenotypes. In general, DHLs with partially extruded anthers also had relatively severe FHB symptoms compared with those exhibiting full anther extrusion. FHB severity was significantly correlated with Fusarium‐damaged kernels and deoxynivalenol concentration. The results of this study showed that partially extruded anthers were considered to be a source of FHB infection. The closed‐flowering phenotype improved resistance to FHB infection. Meanwhile, phenotypes with rapid anther extrusion and ejection also could contribute to the avoidance of FHB infection.

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“…It has been shown by crossing experiments on Salpiglossis sinuata that cleistogamy is dominant to chasmogamy (Lee, Erickson & Janick, 1976). The opposite pattern, however, was found with 1-3 recessive genes for cleistogamy in three crop species (Gupton & Neas, 1981;Merwine, Gourley & Blackwell, 1981;Chhabra & Sethi, 1991;Ueno & Itoh, 1997). In both cases, the constant selfing via cleistogamy would increase the chance of the cleistogamous alleles to persist in natural populations.…”

Section: Introductionmentioning

confidence: 95%

Why is cleistogamy a selected reproductive strategy in Impatiens capensis (Balsaminaceae)?

LU¹

2002

Biol J Linn Soc

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Cleistogamy in wheat: genetic control and the effect of environmental conditions

Cited by 17 publications

References 5 publications

Cleistogamy in Scutellaria indica (Labiatae): effective mating system and population genetic structure

Cleistogamy in Scutellaria indica (Labiatae): effective mating system and population genetic structure

Minor Differences in Anther Extrusion Affect Resistance to Fusarium Head Blight in Wheat

Why is cleistogamy a selected reproductive strategy in Impatiens capensis (Balsaminaceae)?

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