NDLI: A Diploid, Interspecific, Fertile Hybrid from Cultivated Sorghum, Sorghum Bicolor, and the Common Johnsongrass Weed Sorghum Halepense

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A Diploid, Interspecific, Fertile Hybrid from Cultivated Sorghum, Sorghum Bicolor, and the Common Johnsongrass Weed Sorghum Halepense

Content Provider	Springer Nature Link
Author	Dweikat, Ismail
Copyright Year	2005
Abstract	Valuable agronomic traits are often present but inaccessible in the wild relatives of cultivated crop species. Utilization of wild germplasm depends on the production of fertile interspecific hybrids. Several unsuccessful attempts have been made to hybridize cultivated sorghum with its wild relatives to broaden its genetic base and enhance agronomic value. The successful approach used in this study employed the nuclear male sterility gene ms3 to generate a diploid fertile hybrid between the diploid cultivated sorghum (Sorghum bicolor (L) Pers.) and its weedy tetraploid wild relative Johnsongrass (Sorghum halepense (L.) Pers.). Eight sorghum plants were selected from a Nebraska stiff stalk collection that contains the male sterility gene ms3 and were used as the female parent. About 36,000 florets of male sterile sorghum were pollinated with Johnsongrass pollen to produce an average of one well-developed and 180 severely shriveled seed/18,000 crosses. The well-developed seed gave rise to a self-fertile diploid, while none of the shriveled seed were able to germinate. The F$_{1}$ hybrid was confirmed by using cultivated sorghum SSR markers and was selfed to produce an F$_{2}$ population. A sub-sample of 96 segregating F$_{2}$ plants was examined with 36 sorghum polymorphic SSR markers. Thirty-four markers showed a normal 1:2:1 segregation ratio, evidence of normal recombination across the genome. Preliminary results showed that several desirable traits from Johnsongrass, including resistance to greenbug and chinch bug and adaptability to cold temperatures, were expressed in the resulting progenies. These observations suggest that speciation within the genus Sorghum, giving rise to widely divergent phenotypes, is effected largely by ploidy-maintained crossing barriers but apparently not by extensive genomic divergence.
Starting Page	93
Ending Page	101
Page Count	9
File Format	PDF
ISSN	13803743
Journal	Molecular Breeding
Volume Number	16
Issue Number	2
e-ISSN	15729788
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Interspecific hybridization SSR transferability Wild germplasm Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Molecular Biology Biotechnology Agronomy and Crop Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Data from: Surveying the spatial distribution of feral sorghum (Sorghum bicolor L.) and its sympatry with johnsongrass (S. halepense) in South Texas (Dataset)

Real time PCR mediated determination of the spontaneous occurrence of Sorghum bicolor alleles in wild sorghum populations

The population structure of wild sorghum species in agro-ecological zones of Western Kenya

The transferability and polymorphism of mung bean SSR markers in rice bean germplasm

Adaptive values of wild × cultivated sorghum (Sorghum bicolor (L.) Moench) hybrids in generations F1, F2, and F3

Association analysis of sugar yield-related traits in sorghum [Sorghum bicolor (L.)]

Diseases of Johnsongrass (Sorghum halepense): possible role as a reservoir of pathogens affecting other plants

Genetic diversity and population structure among sorghum (Sorghum bicolor, L.) germplasm collections from Western Ethiopia

Pollen-pistil incompatibility in a diploid hybrid potato population with cultivated and wild germplasm

A Diploid, Interspecific, Fertile Hybrid from Cultivated Sorghum, Sorghum Bicolor, and the Common Johnsongrass Weed Sorghum Halepense

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A Diploid, Interspecific, Fertile Hybrid from Cultivated Sorghum, Sorghum Bicolor, and the Common Johnsongrass Weed Sorghum Halepense