Global area of genetically modified crops (GM crops or biotech crops) continues to grow. It was 189.9 million hectares in 2017. Recently, a total of 24 countries have approved GM crops for planting and additional 43 countries have formally imported biotech crops for food, feed, and processing, meaning that biotech crops are now commonly accepted in those countries. With the continuous growth of the global population and the impact of climate change, research and commercialization of genetically modified crops are important for solving global food security issues in the future. At present, a large number of GM rice varieties have been cultivated in China (Chen
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Cold stress is an emerging threat for rice production in Bangladesh particularly in Boro season (winter rice) at seedling stage. Cold stress during seedbed stage or early establishment stage at the main field induces severe seedling mortality that increases cost cultivation and delays crop establishment and ultimately entails into low yield. Development of sustainable cold tolerant high yielding rice varieties warrants an efficient and economic screening technique of germplasms and breeding population. The protocols for cold screening that so far have been used by the breeders and reported in literature are generally dependent on natural cool temperature and/or expensive climate chamber. In this paper, we report an in-house screening protocol that requires less than three weeks to complete the screening cycle and can be used all year round for mass screening of breeding population.
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We performed a molecular marker-based analysis of quantitative trait loci (QTLs) for the traits that determine appearance quality of the grains using 120 double haploid (DH) lines developed by anther culture from F1 hybrid of a cross between Cheongcheong (
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