Maize cytoplasmic male sterility type T (cms-T) mitochondria DNA

摘要

Reagents and test methods for rapidly and specifically testing maize plants for the presence of T-type cms are provided. The reagent includes a novel nucleic acid segment whose sequence is uniquely arranged in mitochondrial DNA of cms-T maize. The segment, designated TURF 2H3, was cloned and vectors comprising TURF 2H3 provided. Subclones having sequences specific to cms-T mitochondrial DNA and the DNA and deduced amino acid sequences of ORI3, which is unique to T-type cytoplasm, are also provided.