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A brief overview of cytoplasmic male sterility in Brassica napus L.

Zunaira Farooq, Ahmad Ali , Hongjie Wang, Muhammad Mola Bakhsh, Shipeng Li, Ying Liu, Wu Shou, Aisha Almakas, Shouping Yang, Yi Bin

Abstract

Rapeseed is one of the world's most important oilseed crops, supplying humans with oil products, nutrient feed for livestock, and natural resources for industrial applications. Due to immense population pressure, more seed production needs to be produced for human consumption due to its high quality of food products. As a vital genetic resource, male sterility provides ease in hybrid seed production and heterosis breeding. For better utilization, understanding mechanisms, mode of action, and genes involved needs to be characterized in detail. Cytoplasmic male sterility (CMS) has been reported in many plant species and is a maternally inherited trait that restricts viable pollen development and production. The mitochondrial genome is involved in the induction of male sterility, while the nuclear genome plays its role in the restoration. Presently, rapeseed CMS has more than ten CMS systems. Pol-CMS and Shaan2A are autoplasmic resources arisen via natural mutation, while Nap-CMS and Nsa-CMS are alloplasmic were created by intergeneric hybridization. Here we discussed the types of male sterility systems in rapeseed in detail. In brief, this review provides comprehensive information on CMS in rapeseed with a particular focus and emphasizes the types of CMS in rapeseed.

FP24337  Accepted 15 April 2025

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