It was concluded that the described HPLC method could be used for the assayof salmon calcitonin in injection, as it offers qualified selectivity, accuracy and precision ofanalysis.
Gossypium hirsutum L. and G. barbadense L. are the two cultivated tetraploid species of cotton. The first is characterized by a high yield and wide adaptation, and the second by its super fiber property. Substit...Gossypium hirsutum L. and G. barbadense L. are the two cultivated tetraploid species of cotton. The first is characterized by a high yield and wide adaptation, and the second by its super fiber property. Substitution line in which a pair of intact chromosomes of TM_1 ( G. hirsutum ) were replaced by a pair of homozygous chromosomes of 3_79 ( G. barbadense ) is an excellent material for genetic research and molecular tagging. In this study, substitution line 16 (Sub 16) was used to evaluate the performance of the 16th chromosome in G. barbadense in TM_1 background. The genetic analysis using the major gene plus polygene mixed inheritance model in F 2∶3 family revealed that there might exist 2 QTLs respectively for boll size, lint percentage, lint index, fiber length and the first fruit branch node, 1 QTL for fiber elongation and flowering date, and no QTL for seed index, fiber strength and Micronaire in chromosome 16. However, 9 QTLs (LOD (logarithm of odds)≥3.0) controlling 6 quantitative traits were significantly identified in linkage group of chromosome 16 constructed in (TM_1×3_79) F 2by interval mapping. Among them, 1 QTL for boll size, fiber length, flowering date and fiber elongation could explain 15.2%, 19.7%, 12.1%, and 11.7% phenotypic variance respectively, 2 QTLs for lint index could explain 11.6% and 41.9%, and 3 QTLs for lint percentage could explain 8.7%, 9.6% and 29.2% phenotypic variance respectively. One unlinked SSR marker was associated with one QTL respectively for boll size and flowering date and they could explain 1.60% and 4.63% phenotypic variance. The traits associated significantly with chromosome 16 from Sub 16 were boll weight, lint percentage, lint index, fiber length, fiber elongation and flowering days.展开更多
Lepidium meyeniiWalp. （Maca）, a perennial herbaceous plant with narrow distdbution in the Andean region, was cultivated by local residents as early as 1600 B.C. It has high nutritional values and multiple medicinal ...Lepidium meyeniiWalp. （Maca）, a perennial herbaceous plant with narrow distdbution in the Andean region, was cultivated by local residents as early as 1600 B.C. It has high nutritional values and multiple medicinal effects. In recent years the plant source of Maca has been greatly scarce since Maca products are increasingly becoming popular in the world. This makes the study urgent on the identification and quality evaluation of Maca materials. In present work, four Mace samples of different origins or handlings and three other natural plants, including radish, odental ginseng and American ginseng, were investigated. Their essential oils （steam distillates） of the hypogeal parts were weighed and analyzed by GC/MS. Through comparison of the characteristics of their chromatograms, it was found that the essential oil of Maca had unique GC/MS behaviors, and the characteristic peaks produced by the major essential oil components （Phenylacetonitrile, Benzaldehyde, 3-Methoxyphenylacetonitrile, etc） were distinct. Furthermore, the chromatograms of several Maca samples showed a similar qualitative pattern except for some differences in the quantitative composition, and the percentage of total essential oils in the samples varied from 0.88 % to 1.59 %. These behaviors and technologies can be applied to the identification of Maca materials in the markets and be a supplement to assess the quality of Maca matedals.展开更多
Objective] This study almed to screen high-quality and high-yield purpIe sweet potato varieties special y used for processing which were suitabIe for pIanting in Liancheng County. [Method] By using a randomized bIock ...Objective] This study almed to screen high-quality and high-yield purpIe sweet potato varieties special y used for processing which were suitabIe for pIanting in Liancheng County. [Method] By using a randomized bIock design, with ‘Longyan 7-3’ as a controI, five purpIe sweet potato varieties were introduced in the autumn of 2012 for comparaton test to evaluate agronomic tralts, economic characters, nu-tritional quality, and processing quantity of dried sweet potato products and fried chips. [Result] ‘Weixiang No.1’ exhibited the highest yield of 41.9 t/hm2, which was improved by 25.8% compared with ‘Longyan 7-3’; fresh tuber yield of ‘Jishu No. 18’ reached 31.6 t/hm2, which was simiIar to that of ‘Longyan 7-3’; dried sweet potato products of ‘Jishu No.18’ and ‘Weixiang No.1’ not onIy had simiIar process stabiIity, taste and coIor to ‘Longyan 7-3’, but also exhibited exceI ent morphoIogy, coIor, transparency, taste and texture, which indicated that these two purpIe sweet potato varieties were suitabIe for processing dried sweet potato products; fried sweet potato chips of ‘Jishu No.18’ and ‘Weixiang No.1’ had moderate oiI content, high expansion degree and simiIar quality to ‘Longyan 7-3’, which indicated that these two purpIe sweet potato varieties were suitabIe for processing fried sweet potato chips; ‘Fushu No.9’, ‘Quanzi No.1’ and ‘Ninzi No.1’ exhibited beautifuI shape, high nutritional quality and good eating quality, which were suitabIe for fresh eating or processing sweet potato powder. [Conclusion] This study provided a scientific ba-sis for Iarge-scale popuIarization and appIication of new purpIe sweet potato vari-eties special y used for processing.展开更多
文摘It was concluded that the described HPLC method could be used for the assayof salmon calcitonin in injection, as it offers qualified selectivity, accuracy and precision ofanalysis.
文摘Gossypium hirsutum L. and G. barbadense L. are the two cultivated tetraploid species of cotton. The first is characterized by a high yield and wide adaptation, and the second by its super fiber property. Substitution line in which a pair of intact chromosomes of TM_1 ( G. hirsutum ) were replaced by a pair of homozygous chromosomes of 3_79 ( G. barbadense ) is an excellent material for genetic research and molecular tagging. In this study, substitution line 16 (Sub 16) was used to evaluate the performance of the 16th chromosome in G. barbadense in TM_1 background. The genetic analysis using the major gene plus polygene mixed inheritance model in F 2∶3 family revealed that there might exist 2 QTLs respectively for boll size, lint percentage, lint index, fiber length and the first fruit branch node, 1 QTL for fiber elongation and flowering date, and no QTL for seed index, fiber strength and Micronaire in chromosome 16. However, 9 QTLs (LOD (logarithm of odds)≥3.0) controlling 6 quantitative traits were significantly identified in linkage group of chromosome 16 constructed in (TM_1×3_79) F 2by interval mapping. Among them, 1 QTL for boll size, fiber length, flowering date and fiber elongation could explain 15.2%, 19.7%, 12.1%, and 11.7% phenotypic variance respectively, 2 QTLs for lint index could explain 11.6% and 41.9%, and 3 QTLs for lint percentage could explain 8.7%, 9.6% and 29.2% phenotypic variance respectively. One unlinked SSR marker was associated with one QTL respectively for boll size and flowering date and they could explain 1.60% and 4.63% phenotypic variance. The traits associated significantly with chromosome 16 from Sub 16 were boll weight, lint percentage, lint index, fiber length, fiber elongation and flowering days.
文摘Lepidium meyeniiWalp. （Maca）, a perennial herbaceous plant with narrow distdbution in the Andean region, was cultivated by local residents as early as 1600 B.C. It has high nutritional values and multiple medicinal effects. In recent years the plant source of Maca has been greatly scarce since Maca products are increasingly becoming popular in the world. This makes the study urgent on the identification and quality evaluation of Maca materials. In present work, four Mace samples of different origins or handlings and three other natural plants, including radish, odental ginseng and American ginseng, were investigated. Their essential oils （steam distillates） of the hypogeal parts were weighed and analyzed by GC/MS. Through comparison of the characteristics of their chromatograms, it was found that the essential oil of Maca had unique GC/MS behaviors, and the characteristic peaks produced by the major essential oil components （Phenylacetonitrile, Benzaldehyde, 3-Methoxyphenylacetonitrile, etc） were distinct. Furthermore, the chromatograms of several Maca samples showed a similar qualitative pattern except for some differences in the quantitative composition, and the percentage of total essential oils in the samples varied from 0.88 % to 1.59 %. These behaviors and technologies can be applied to the identification of Maca materials in the markets and be a supplement to assess the quality of Maca matedals.
基金Supported by Major Project of Science and Technology of Fujian Province(2011S0044)Earmarked Fund for China Agriculture Research System(CARS-11-C-07-2012)~~
文摘Objective] This study almed to screen high-quality and high-yield purpIe sweet potato varieties special y used for processing which were suitabIe for pIanting in Liancheng County. [Method] By using a randomized bIock design, with ‘Longyan 7-3’ as a controI, five purpIe sweet potato varieties were introduced in the autumn of 2012 for comparaton test to evaluate agronomic tralts, economic characters, nu-tritional quality, and processing quantity of dried sweet potato products and fried chips. [Result] ‘Weixiang No.1’ exhibited the highest yield of 41.9 t/hm2, which was improved by 25.8% compared with ‘Longyan 7-3’; fresh tuber yield of ‘Jishu No. 18’ reached 31.6 t/hm2, which was simiIar to that of ‘Longyan 7-3’; dried sweet potato products of ‘Jishu No.18’ and ‘Weixiang No.1’ not onIy had simiIar process stabiIity, taste and coIor to ‘Longyan 7-3’, but also exhibited exceI ent morphoIogy, coIor, transparency, taste and texture, which indicated that these two purpIe sweet potato varieties were suitabIe for processing dried sweet potato products; fried sweet potato chips of ‘Jishu No.18’ and ‘Weixiang No.1’ had moderate oiI content, high expansion degree and simiIar quality to ‘Longyan 7-3’, which indicated that these two purpIe sweet potato varieties were suitabIe for processing fried sweet potato chips; ‘Fushu No.9’, ‘Quanzi No.1’ and ‘Ninzi No.1’ exhibited beautifuI shape, high nutritional quality and good eating quality, which were suitabIe for fresh eating or processing sweet potato powder. [Conclusion] This study provided a scientific ba-sis for Iarge-scale popuIarization and appIication of new purpIe sweet potato vari-eties special y used for processing.
