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http://krishi.icar.gov.in/jspui/handle/123456789/30929
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | R. K. Khulbe, A. Pattanayak and Vivek Panday | en_US |
dc.date.accessioned | 2020-01-21T07:10:07Z | - |
dc.date.available | 2020-01-21T07:10:07Z | - |
dc.date.issued | 2019-11-01 | - |
dc.identifier.citation | Not Available | en_US |
dc.identifier.issn | 0019-5200 | - |
dc.identifier.uri | http://krishi.icar.gov.in/jspui/handle/123456789/30929 | - |
dc.description | Not Available | en_US |
dc.description.abstract | The current method of doubled haploid (DH) development in maize involves in vivo production of haploids using R1- nj-based haploid inducer lines that upon use as male render a small fraction of seed in the pollinated female ears haploid. Identification of haploid seed relies on R1-nj marker expression in the endosperm and embryo, and the degree of its expression determines efficiency of DH development process. In the present study, R1-nj expression in the endosperm was characterized in crosses of CIMMYT’s R1- nj-based haploid inducer TAILP1 with a set comprising 18 early maturity hybrids and their 23 parental inbreds. Kernel colour inhibition was observed only in a small proportion of the hybrids and inbreds. Comparison of R1-nj expression in the hybrids and their parental inbreds revealed a distinct pattern, which may be useful in identifying source populations and/or determining parental constituents for synthesizing source populations with predicted amenability to doubled haploid development using R1-nj-based haploid inducers. However, deviation from the pattern was noted in hybrids involving inbreds with higher degree of colour inhibition, which suggests complex nature of R1-nj phenotype expression and necessitates further investigation involving larger sets of germplasm for dissecting the role of maternal and paternal genetic factors in determining R1-nj phenotype expression. The hybrids found exhibiting complete kernel anthocyanin expression in present study can be used directly as source populations for DH development using R1-nj based haploid inducers. Besides, since the inbreds used in the study have originated from and/or are accessible to CGIAR/NARS maize breeding programmes, the information on their kernel anthocyanin expression can be helpful in selection of source populations or generating new source populations amenable for DH development using R1-nj based haploid inducers. | en_US |
dc.description.sponsorship | Not Available | en_US |
dc.language.iso | English | en_US |
dc.publisher | Indian Society of Genetics & Plant Breeding | en_US |
dc.relation.ispartofseries | Not Available; | - |
dc.subject | Maize, haploid inducer, R1-nj expression, doubled haploid, amenability | en_US |
dc.title | R1-nj expression in parental inbreds as a predictor of amenability of maize hybrids to R1-nj-based doubled haploid development | en_US |
dc.title.alternative | Not ARvailable | en_US |
dc.type | Research Paper | en_US |
dc.publication.projectcode | Not Available | en_US |
dc.publication.journalname | Indian Journal of Genetics and Plant Breeding | en_US |
dc.publication.volumeno | 79(4) | en_US |
dc.publication.pagenumber | 678-684 | en_US |
dc.publication.divisionUnit | Not Available | en_US |
dc.publication.sourceUrl | http://www.isgpb.org/documents/archive/5-678-684-rk-khulbe.pdf | en_US |
dc.publication.authorAffiliation | ICAR-Vivekananda Parvatiya Krishi Anusandhan Sansthan, Almora 263 145, Uttarakhand | en_US |
dc.ICARdataUseLicence | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf | en_US |
dc.publication.naasrating | 6.55 | en_US |
Appears in Collections: | CS-VPKAS-Publication |
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