Field performance on grain yield and quality and genetic diversity of overwintering cultivated rice (Oryza sativa L.) in southwest China
| Autor: | Xiaojian Qin, Yongshu Liang, Hanma Zhang, Wenbin Nan |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Crops
Agricultural 0106 biological sciences 0301 basic medicine China DNA Plant Climate Science Biology Genes Plant 01 natural sciences Article Plant breeding Crop Plant reproduction 03 medical and health sciences Grain quality Overwintering Genetic diversity Multidisciplinary Oryza sativa Significant difference Genetic Variation Oryza Ratooning Horticulture 030104 developmental biology Medicine Grain yield Seasons Plant sciences 010606 plant biology & botany |
| Zdroj: | Scientific Reports, Vol 11, Iss 1, Pp 1-16 (2021) Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-021-81291-8 |
| Popis: | Understanding the field performance on grain yield and quality and the genetic diversity of overwintering (OW) cultivated rice (Oryza sativa L.) across main crop (MC) and ratooning crop (RC) is the premise to make strategies for the future OW rice variety improvement in rice production. The present field experiments were conducted in RC of 2016, in MC of both 2017 and 2018, and RC in 2019 to identify genotypes OW rice that perform stable in terms of grain yield and quality across different climate conditions. The grain yield plant-1 (GYP) and its components in six genotypes of OW rice exhibited significant difference across the 4 years (P ≤ 0.05), the maximum GYP in OW6 rice was harvested (60.28 g) in MC of 2017, but the minimum GYP in OW1 rice was harvested (33.01 g) in MC of 2018. Within six genotypes of OW rice, four grain shape traits displayed a relative small significant difference, four grain quality traits exhibited a relative small significant difference except for chalkiness rate (CR), there 226 pairs of significant PCC values between GYP and its components were calculated in all tested rice and varied from six in OW6 to eleven in OW1, there 130 pairs of significant PCC values among the four grain shape traits were calculated and ranged from twenty-one in OW1, 3, 5 to twenty-three in OW2, there 118 pairs of significant PCC values among the four grain quality traits were calculated and ranged from seventeen in OW2 to twenty-three in OW1. The numbers, directions, and size of PCC values for the grain yield and quality characters in all tested rice displayed a series of irregular variations. Six genotypes of OW rice were apparently distinguished by employing 196 pairs of simple-sequence repeats (SSRs) markers and exhibited abundant genetic diversity at the DNA level. Data from this study provide an extensive archive for the future exploration and innovation of overwintering cultivated rice variety. |
| Databáze: | OpenAIRE |
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