CLOSE LINKAGE OF GENES FOR MALE STERILITY AND ANTHOCYANIN SYNTHESIS IN BRASSICA OLERACEA PROMISING FOR F1 HYBRID SEED PRODUCTION; MULTIVALENTS AT MEIOSIS NOT INVOLVED IN THE LINKAGE

Thirty-two progenies showed a mean of 4.3 ± 0.3% recombination between ms-1, a gene for male sterility and c-1, a seedling marker gene. The closeness of this linkage makes it useful for producing F1 hybrid seed of Brassica vegetable crops. Differential viability, acting prior to seed germination and associated with the c-1 locus, resulted in either a deficiency or a surplus of ms-1 ms-1 plants depending on the linkage phase. The mean viability of plants with the C-1 phenotype was 1.26 ± 0.03 times that of c-1 c-1 plants. The genetic stocks studied bred true for a quadrivalent at meiosis I. This presumed duplication was traced through seven generations but was not responsible for the ms-1 c-1 linkage.

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CHARACTERIZATION OF A MALE-STERILE SYSTEM WITH A CLOSELY LINKED SEEDLING MARKER TO FACILITATE F1 HYBRID TOMATO SEED PRODUCTION

HortScience ◽

10.21273/hortsci.25.9.1168e ◽

1990 ◽

Vol 25 (9) ◽

pp. 1168e-1168 ◽

Cited By ~ 1

Author(s):

Edward C. Tigchelaar

Keyword(s):

Male Sterility ◽

Seed Production ◽

Marker Gene ◽

Hybrid Seed ◽

Hybrid Seed Production ◽

Chromosome 2 ◽

Male Sterile ◽

Tomato Seed ◽

F1 Hybrid

The coupling phase linkages have been synthesized between the gene aw (without anthocyanin) and the male sterile gene ms15 (and its alleles ms26, ms47, and an Israeli source of male sterility). Less than 2 map units separate aw and ms15 on chromosome 2, providing a convenient seedling marker gene to rapidly identify male sterility for both inbred development and hybrid seed production. The seedling marker also provides a convenient marker to rapidly assess hybrid seed purity. Unique features of each of the alleles involved in male sterility and their use in inbred and hybrid development will be described.

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Male Sterility and its Commercial Exploitation in Hybrid Seed Production of Vegetable Crops: A Review

Agricultural Reviews ◽

10.18805/ag.r-1880 ◽

2019 ◽

Vol 40 (04) ◽

Author(s):

Pramod Sharma ◽

Sunil A Nair ◽

Payal Sharma

Keyword(s):

Male Sterility ◽

Seed Production ◽

Large Scale ◽

Pollen Grains ◽

Hybrid Seed ◽

Scale Production ◽

Hybrid Seed Production ◽

Vegetable Crops ◽

Male Sterile ◽

Large Scale Production

Male sterility is described as absence of functional pollen grains in hermaphrodite flowers facilitating large scale production of hybrid seeds in vegetable crops. It eases hybrid seed production at commercial level in crops like tomato, chilli, capsicum, carrot, onion, cabbage, cauliflower and cucurbits. Male sterility would reduce the cost of hybrid seed production by limiting the labour making it efficient and economical. Incorporation of biotechnological tools in conventional plant breeding techniques would aid the breeders in limiting the drawbacks surrounding exploitation of male sterility for development of new hybrids. The present review is an attempt to summarize and to know the commercial utilization of male sterile line in hybrid seed production of vegetables.

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Detergent induced pollen sterility in some vegetable crops

International Journal of Horticultural Science ◽

10.31421/ijhs/11/1/564 ◽

2005 ◽

Vol 11 (1) ◽

Author(s):

S. V. S. Chauhan ◽

D. K. Agnihotri

Keyword(s):

Lycopersicon Esculentum ◽

Aqueous Solutions ◽

Male Sterility ◽

Seed Production ◽

Synthetic Detergent ◽

Pollen Sterility ◽

Hybrid Seed ◽

Hybrid Seed Production ◽

Vegetable Crops ◽

Number Of Seeds

Efficacy of a popular synthetic detergent, Surf excel in some important vegetable crops viz. Okra or lady finger (Abelmoschus esculentus L.), chilli or red pepper (Capsicum annuum L.) and tomato (Lycopersicon esculentum Mill) was evaluated for inducing male sterility and hybrid seed production. Foliar sprays with aqueous solutions of Surf excel (1.0 and 1.5% w/v) in these crops induced complete pollen sterility. The treated plants showed a delay in flowering, a reduction in the number of flowers and fruits/plant, number of seeds/fruit resulting in a reduction in yield/plant. However, the male sterility thus induced was successfully exploited for hybrid seed production.

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GENIC MALE STERILITY AND ITS APPLICATION IN TOMATO (LYCOPERSICON ESCULENTUM MILL.) HYBRID BREEDING AND HYBRID SEED PRODUCTION

Acta Horticulturae ◽

10.17660/actahortic.2007.729.3 ◽

2007 ◽

pp. 45-51 ◽

Cited By ~ 6

Author(s):

B. Atanassova

Keyword(s):

Lycopersicon Esculentum ◽

Male Sterility ◽

Seed Production ◽

Hybrid Seed ◽

Hybrid Breeding ◽

Hybrid Seed Production ◽

Genic Male Sterility ◽

Lycopersicon Esculentum Mill

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Molecular regulation ofZmMs7required for maize male fertility and development of a dominant male-sterility system in multiple species

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.2010255117 ◽

2020 ◽

Vol 117 (38) ◽

pp. 23499-23509 ◽

Cited By ~ 1

Author(s):

Xueli An ◽

Biao Ma ◽

Meijuan Duan ◽

Zhenying Dong ◽

Ruogu Liu ◽

...

Keyword(s):

Male Sterility ◽

Seed Production ◽

Target Genes ◽

Hybrid Seed ◽

Molecular Regulation ◽

Dominant Male ◽

Hybrid Seed Production ◽

Maize Breeding ◽

Pollen Exine ◽

Multiple Species

Understanding the molecular basis of male sterility and developing practical male-sterility systems are essential for heterosis utilization and commercial hybrid seed production in crops. Here, we report molecular regulation by genic male-sterility genemaize male sterility 7(ZmMs7) and its application for developing a dominant male-sterility system in multiple species.ZmMs7is specifically expressed in maize anthers, encodes a plant homeodomain (PHD) finger protein that functions as a transcriptional activator, and plays a key role in tapetal development and pollen exine formation. ZmMs7 can interact with maize nuclear factor Y (NF-Y) subunits to form ZmMs7-NF-YA6-YB2-YC9/12/15 protein complexes that activate target genes by directly binding to CCAAT box in their promoter regions. Premature expression ofZmMs7in maize by an anther-specific promoterp5126results in dominant and complete male sterility but normal vegetative growth and female fertility. Early expression ofZmMs7downstream genes induced by prematurely expressed ZmMs7 leads to abnormal tapetal development and pollen exine formation inp5126-ZmMs7maize lines. Thep5126-ZmMs7transgenic rice andArabidopsisplants display similar dominant male sterility. Meanwhile, themCherrygene coupled withp5126-ZmMs7facilitates the sorting of dominant sterility seeds based on fluorescent selection. In addition, both thems7-6007recessive male-sterility line andp5126-ZmMs7Mdominant male-sterility line are highly stable under different genetic germplasms and thus applicable for hybrid maize breeding. Together, our work provides insight into the mechanisms of anther and pollen development and a promising technology for hybrid seed production in crops.

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