Genetic male sterility in wheat

Athwal, D. S.; Phul, P. S.; Minocha, J. L.

doi:10.1007/bf00028942

Cited by 14 publications

(8 citation statements)

References 3 publications

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“…The first commercial safflower hybrid in India (Anjani 1997a) was developed using a recessive GMS line (Anjani 1997b). Recessive GMS was also found in pigeon pea (Reddy et al 1978), cotton (Singh and Kumar 1993), barley (Hockett and Eslick 1967), wheat (Athwal et al 1967) and in many other crops.…”

Section: Discussionmentioning

confidence: 98%

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Genetic linkage between male sterility and non‐spiny trait in safflower (Carthamus tinctorius L.)

Anjani

2013

Plant Breeding

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Genetic male sterility (GMS) exists naturally in safflower (Carthamus tinctorius L.). In the existing safflower GMS lines, sterile and fertile plants are distinguishable at flowering. This causes delay in fertile plants rouging and reduction in hybrid purity. In this investigation, a cross between a spiny GMS parent 13‐137 and a spiny non‐GMS parent ‘A1’ was effected. One sib cross, SC‐67, producing non‐parental‐type non‐spiny sterile and spiny fertile plants in F3 was advanced to F9 through sib crossing between non‐spiny sterile and spiny fertile plants. Mendelian digenic segregation was not observed for non‐spiny trait and male sterility. The results revealed strong linkage between these traits. The linkage was confirmed in F2 generations of crosses between a non‐spiny marker‐linked GMS line (MGMS) and five elite lines. Male sterility–linked non‐spiny trait could distinguish sterile and fertile plants at elongation stage. The MGMS would be useful in production of pure F1 hybrid seed and development of elite populations.

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Section: Discussionmentioning

confidence: 98%

“…), cotton (Singh and Kumar ), barley (Hockett and Eslick ), wheat (Athwal et al. ) and in many other crops.…”

Section: Discussionmentioning

confidence: 99%

Genetic linkage between male sterility and non‐spiny trait in safflower (Carthamus tinctorius L.)

Anjani

2013

Plant Breeding

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“…Therefore, the crucial and important requirement for heterosis breeding is to promote natural out-crossing through induction of male sterility. Genic male sterility in wheat was reported long ago (Pugsley and Oram 1959) and its utilization was also reported in mid-sixties (Suneson 1962;Athwal et al 1967). Other different types of male sterility inducing systems were also been reported for production of hybrid wheat.…”

Section: Introductionmentioning

confidence: 96%

Genetic analysis and molecular mapping of a new fertility restorer gene Rf8 for Triticum timopheevi cytoplasm in wheat (Triticum aestivum L.) using SSR markers

et al. 2013

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A study on mode of inheritance and mapping of fertility restorer (Rf) gene(s) using simple sequence repeat (SSR) markers was conducted in a cross of male sterile line 2041A having Triticum timopheevi cytoplasm and a restorer line PWR4099 of common wheat (Triticum aestivum L.). The F 1 hybrid was completely fertile indicating that fertility restoration is a dominant trait. Based on the pollen fertility and seed set of bagged spikes in F 2 generation, the individual plants were classified into fertile and sterile groups. Out of 120 F 2 plants, 97 were fertile and 23 sterile (based on pollen fertility) while 98 plants set ≥5seeds/spike and 22 produced ≤4 or no seed. The observed frequency fits well into Mendelian ratio of 3 fertile: 1 sterile with χ 2 value of 2.84 for pollen fertility and 2.17 for seed setting indicating that the fertility restoration is governed by a single dominant gene in PWR4099. The three linked SSR markers, Xwmc503, Xgwm296 and Xwmc112 located on the chromosome 2DS were placed at a distance of 3.3, 5.8 and 6.7cM, respectively, from the Rf gene. Since, no known Rf gene is located on the chromosome arm 2DS, the Rf gene in PWR4099 is a new gene and proposed as Rf8. The closest SSR marker, Xwmc503, linked to the Rf8 was validated in a set of fertility restorer, maintainer and cytoplasmic male sterile (CMS) lines. The closely linked SSR marker Xwmc503 may be used in marker assisted backcross breeding facilitating the transfer of fertility restoration gene Rf8 into elite backgrounds with ease.

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“…Thus, CMS is agronomically important in F 1 hybrid seed production (Duvick, 1959). During the last several decades, considerable progress has been made in understanding the mechanisms of plant male sterility through genetics (Athwal et al, 1967), cytology (Sodhi et el., 2006), physiology (Jiang et el., 2007), biochemistry (Biasi et al, 2001), and molecular biology (Crouzillat et al, 1991), information on tapetal alterations, and pollen wall development, which have been studied in the Arabidopsis ms1 mutant (Vizcay- Barrena and Wilson, 2006), but CMS in Chinese cabbage has not been examined.…”

Section: Introductionmentioning

confidence: 99%

The pollen wall and tapetum are altered in the cytoplasmic male sterile line RC7 of Chinese cabbage (Brassica campestris ssp pekinensis)

Zhao

Huang²,

Ahmed³

et al. 2012

Genet. Mol. Res.

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ABSTRACT. Cytoplasmic male sterile line RC 7 of Chinese cabbage produces mature anthers without pollen. To understand the mechanisms involved, we examined the ultrastructural changes during development of the microspores. Development of microspores was not affected at the early tetrad stage. During the ring-vacuolated period, some large vacuoles appeared in the tapetum cells, making them larger, extending to the anther sac center during the monocyte period. At the same time, the tapetum degenerated as the microspores aborted, resulting in pollendeficient anthers. As a result, the locules collapsed and the anthers shriveled. The callose was degraded in the pollen walls; abnormal deposits of electrodense material gave rise to irregular spike-shaped structures, rather than the characteristic rod-like shape of the B7 bacula. The internal intine wall of RC 7 was thinner than that of the B7 type. At the mitosis I microspore stage, the tapetum cells contained multiple plastids, with numerous small spherical plastoglobuli, and lipid bodies. Based on these observations, we suggest that RC 7 abortion may be due to mutated genes that normally regulate development of the pollen wall and cell walls in the RC 7 line.

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Genetic male sterility in wheat

Cited by 14 publications

References 3 publications

Genetic linkage between male sterility and non‐spiny trait in safflower (Carthamus tinctorius L.)

Genetic linkage between male sterility and non‐spiny trait in safflower (Carthamus tinctorius L.)

Genetic analysis and molecular mapping of a new fertility restorer gene Rf8 for Triticum timopheevi cytoplasm in wheat (Triticum aestivum L.) using SSR markers

The pollen wall and tapetum are altered in the cytoplasmic male sterile line RC7 of Chinese cabbage (Brassica campestris ssp pekinensis)

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