Features of Ontogeny of Wheat Hybrid of Type Dwarf II

The kinetochore region of unpaired chromosomes (univalents) consists of two kinetochores, each belonging to a sister chromatid, that are located adjacent to one another on the surface of the univalent chromosome. This condition results in a movement by the univalent towards one of the polar regions at the onset of metaphase I. Once arrived in this region, one of the sister kinetochores obtains attachments of microtubules from the opposite pole. This results in a gradual return of the univalent to the equatorial plate, where it reaches an equilibrium. The sister kinetochores remain adjacent during the movement, but once arrived at the metaphase plate they develop a typical mitotic appearance, in which the sister kinetochores have opposite positions on the chromosomes.

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Identification of differentially expressed genes in leaf and root between wheat hybrid and its parental inbreds using PCR-based cDNA subtraction

Plant Molecular Biology ◽

10.1007/s11103-005-5102-x ◽

2005 ◽

Vol 58 (3) ◽

pp. 367-384 ◽

Cited By ~ 59

Author(s):

Yingyin Yao ◽

Zhongfu Ni ◽

Yinhong Zhang ◽

Yan Chen ◽

Yuhua Ding ◽

...

Keyword(s):

Differentially Expressed Genes ◽

Differentially Expressed ◽

Cdna Subtraction ◽

Wheat Hybrid

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Genetic Mapping of ms1s, a Recessive Gene for Male Sterility in Common Wheat

International Journal of Molecular Sciences ◽

10.3390/ijms22168541 ◽

2021 ◽

Vol 22 (16) ◽

pp. 8541

Author(s):

Wenlong Yang ◽

Yafei Li ◽

Linhe Sun ◽

Muhammad Shoaib ◽

Jiazhu Sun ◽

...

Keyword(s):

Male Sterility ◽

Wheat Yield ◽

Recessive Gene ◽

Distal Region ◽

Physical Distance ◽

Hybrid Breeding ◽

Male Sterile ◽

Wheat Hybrid ◽

F2 Population ◽

Hybrid Seeds

The utilization of heterosis is an important way to improve wheat yield, and the production of wheat hybrid seeds mainly relies on male-sterile lines. Male sterility in line 15 Fan 03 derived from a cross of 72,180 and Xiaoyan 6 is controlled by a single recessive gene. The gene was mapped to the distal region of chromosome 4BS in a genetic interval of 1.4 cM and physical distance of 6.57 Mb between SSR markers Ms4BS42 and Ms4BS199 using an F2 population with 1205 individuals. Sterile individuals had a deletion of 4.57 Mb in the region presumed to carry the Ms1 locus. The allele for sterility was therefore named ms1s. Three CAPS markers were developed and verified from the region upstream of the deleted fragment and can be used for ms1s marker-assisted selection in wheat hybrid breeding. This work will enrich the utilization of male sterility genetic resources.

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