1962•American Journal of BotanyRequires access
CYTOPLASMIC DIFFERENCES IN T‐TYPE CYTOPLASMIC MALE‐STERILE CORN AND ITS MAINTAINER
John R. Edwardson
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Abstract
Edwardson, John R. (U. Florida, Gainesville.) Cytoplasmic differences in T‐type cytoplasmic male‐sterile corn and its maintainer. Amer. Jour. Bot. 49 (2) : 184–187. Illus. 1962.—Differences in inclusions in sections of T‐type male‐sterile and maintainer corn were found with electron microscopy. Some male‐sterile root tip cells contain dense inclusions ca. 50–60 mμ dia. These inclusions are always associated with areas of dense cytoplasm, while no such inclusions or dense cytoplasmic areas occur in maintainer material. The majority of maintainer tapetal cells contain inclusions ca. 46–52 mμ dia.; the majority of male‐sterile tapetal cells contain inclusions ca. 58–64 mμ dia. Well‐defined membranes always enclose the inclusions in maintainer material; indistinct membranes are occasionally associated with inclusions in sterile material.