Development of a new fragrant and good eating quality rice variety with stripe virus disease resistance by molecular marker-assisted gene pyramiding
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Authors
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G. C. Zhao
Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, P. R. China
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M. X. Xie
Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, P. R. China
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F. Y. Yu
The Bright Seed Industry Company, Shanghai 202171, P. R. China
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D. M. Hu
Qingpu District Agro-Technology Extension Centre, Shanghai, 201700, P. R. China
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T. Zhang
Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, P. R. China
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J. Y. Li
Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, P. R. China
Abstract
Rice (Oryza sativa L.) is one of the most important staple
crops providing near half of the global population. With
the advance of living standards, people demand for novel
rice varieties with better quality of eating and fragrance.
Unfortunately, the practical application of pesticides to
control rice stripe disease results a significant
deterioration of rice quality and nutrition. Therefore, it is
an urgent need to develop disease resistant rice
varieties with good eating quality and fragrance. Here,
we present the strategy and practical development of a
new rice variety, Shangshida No. 15, by molecular markerassisted gene pyramiding. ‘Shangshida No. 15’ displayed
the aroma trait and the same good eating quality
phenotypes as that of Jinfeng rice, a famous rice variety
for its good eating quality and high yield in the Yangtze
River region of China. Shangshida No. 15 exhibited
significantly higher average plant height and 1000-grain
weight, while its growth duration was approximately 2
weeks shorter than those of Jinfeng. In conclusion, our
study demonstrated a breeding strategy for obtaining high
quality rice through molecular marker-assisted gene
pyramiding, and the resulting new variety could facilitate
further attempts to develop more high eating quality rice
varieties together with stripe disease-resistant traits without
affecting yields.