| [the zonal characteristics and cultivated types difference of functional components in brown rice for core collection of yunnan rice]. | the zonal characteristics and cultivated types difference of functional components in brown rice of 907 accessions for primary core collection for rice landrace from 16 prefectures of five rice regions in yunnan province were determined by ultraviolet spectrophotometry of du640 type from beckman. the analytical results showed that the contents mg x (100 g)(-1) of total flavone in brown rice is 306.98 +/- 192.75, the content of upland (341.74 +/- 185.11) is the most significantly higher than that ... | 2010 | 21322246 |
| cytoplasm affects grain weight and filled-grain ratio in indica rice. | cytoplasmic effects on agronomic traits--involving cytoplasmic and nuclear genomes of either different species or different cultivars--are well documented in wheat but have seldom been demonstrated in rice (oryza sativa l.). to detect cytoplasmic effects, we introgressed the nuclear genomes of three indica cultivars--guichao 2, jiangchengkugu, and dianrui 449--into the cytoplasms of six indica cultivars - dijiaowujian, shenglixian, zhuzhan, nantehao, aizizhan, and peta. these 18 nuclear substitu ... | 2011 | 21631950 |
| [construction and analysis of cdna library of yunnan yuanjiang o. rifupogon leaf]. | the cdna library of yuanjiang oryza rifupongon leaf was constructed by using smart technology. the titers of the non-amplified library and the amplified library were 1.1 x 106 pfu/ml and 3.98 x 107 pfu/ml, respectively. the recombination rate was more than 91%. the dna sequence length of the most cdnas in the library was between 500-2 000 bp. some cdnas chosen by random were sequenced. after blast analysis of some cdnas, their possible function were predicted. it is found that these cdnas show 9 ... | 2008 | 18550503 |
| [characteristics of yunnan province rice landrace core collections under phosphorus deficiency]. | soil phosphorus (p) deficiency is a major yield-limiting factor in rice production. employing 526 rice landrace accessions from 5 rice-planting regions and 16 prefectures in yunnan province, this paper studied their p-deficiency tolerance characteristics by comparing the relative plant dry weight under acid red soil condition. the results showed that northwest yunnan cold highland japonica rice-planting region was most abundant in p-deficiency tolerance core collection of indica, and there was n ... | 2005 | 16262081 |
| [yield formation of different single-season rice (oryza sativa l. ) types and its relationships with meteorological factors in yunnan province of southwest china]. | by using the 1994-2010 observation data of paddy rice growth period and yield from 14 agro-meteorological stations at different altitudes in yunnan province, this paper studied the rice yield formation and the effects of meteorological factors on low-yield rice yield components. according to the systematic cluster analysis of rice yield components and the rice types at the 14 stations, the rice was divided into 4 types, i. e., low-yield japonica rice, low-yield indica rice, high-yield japonica r ... | 2013 | 24483077 |
| diachronic analysis of genetic diversity in rice landraces under on-farm conservation in yunnan, china. | diachronic analysis showed no significant changes in the level of genetic diversity occurred over the past 27 years' domestication, which indicated genetic diversity was successfully maintained under on-farm conservation. rice (oryza sativa l.) is one of the earliest domesticated crop species. its genetic diversity has been declining as a result of natural and artificial selection. in this study, we performed the first analysis of the levels and patterns of nucleotide variation in rice genomes u ... | 2016 | 26498440 |
| [effects of different ecological conditions on grain quality and rva profile of japonica rice from yunnan of china and korea]. | taking sixteen japonica rice varieties from yunnan of china and korea growing at three locations with different altitudes in yunnan plateau as test materials, this paper studied the effects of different ecological conditions on their grain quality, including brown rice length (brl), brown rice width (brw), length-width ratio (l/w), chalky rate (cr), whiteness (wh), amylose content (ac), protein content (pc), and alkali digestion value (adv), and their starch rva profile, including peak viscosity ... | 2009 | 20353061 |
| [dynamics and combined injuries of main pest species in rice cropping zones of yunnan, southwest china]. | a series of rice pest injuries (due to pathogens, insects, and weeds) were surveyed in 286 farmers' fields for major rice varieties of three rice cropping zones of yunnan province, southwest china. the composition and dynamics of main pest species were analyzed, and the trend of rice pest succession in yunnan was discussed based upon landmark publications. the results showed that the three rice cropping zones had different pest characteristics as regard to main species, dynamics and combined inj ... | 2014 | 24765862 |