Indian Society of Genetics & Plant Breeding

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GENETIC STUDIES IN RICE (ORYZA SATIVA L.). INHERITANCE AND LINKAGE RELATIONSHIP OF LEAF ANGLES

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Inheritance and linkage relationships of leaf angles, i.e. angles of leaf attachment and
openness and flag leaf angle were studied in a cross between two upland cultivars of rice,
namely, D 6-2-2 (drooping leaf) and HY-256 Purple (acute leaf angles). Acute leaf angle was
a dominant trait under the control of 4-5 nonallelic mutually interacting genes. The joint
segregation pattern revealed the existence of common pleiotropic genes with similar and
differential action between each of these angle characters coupled with linkage between
only antiinhibitory genes. Nature of inheritance and interrelationship of these leaf angles
are discussed and, based on the genetic hypotheses, genotypic constitution of each parent
proposed.
 

Keywords: Oryza sativa, rice, inheritance, pleiotropy, linkage, leaf angles.

Info

Year: 1995
Volume: 55
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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