Indian Society of Genetics & Plant Breeding

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PLEIOTROPY AND LINKAGE IN RICE (ORYZA SATIVA L.). II. PLEIOTROPIC INHIBITORS AND ANTI-INHIBITOR, AND LINKAGE OF ANTHOCYANIN PIGMENTATION GENES: LEAF BLADE, INTERNODE, NODAL RING AND PANICLE BASE

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Inheritance pattern of anthocyanin pigmentation in leaf blade, internode, nodal ring and
panicle base of rice has been investigated in an intervarietal cross between the upland rice
cultivars D 6-2-2 (green variety) and HY·256 Purple (purple variety). Three to five pairs of
genes control the pigmentation of leaf blade (Fz ratio 39 : 25), internode (147 : 109), nodal
ring (63 : 961), and panicle base (171 : 853). Two pleiotropic inhibitory genes and one
anti-inhibitory gene show variable expression in these plant parts. Linkage has been
established between the basic genes for pigmentation in leaf blade, internode and panicle
base. This linkage group (Ppba-PI-Pin) probably forms a part of the II (lg) linkage group
of Misro et al. (32), in which the genes Ppba and Pin for pigmentation in panicle base and
internode are new additions.
 

Keywords: Rice, anthocyanin, inheritance, pleiotropy, linkage.

Info

Year: 1994
Volume: 54
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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