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In this study, the content changes of anthocyanins levels, antioxidant activities as well as related genes in their biosynthesis pathways of two seasons black sweet corn kernels were determined. Generally, three anthocyanins contents showed similar trend with peak at 10 days after pollination (DAP) in both seasons existing as free forms, and they gradually grew afterwards as kernel matured. Pelargonidin as the leading component was decreased significantly in autumn comparing to contents in summer which may be affected by lower photosynthetically active radiation (PAR) and distinct gene expression levels. CF1, F3H and LAD as the essential genes in flavonoid and anthocyanin biosynthesis had high expression levels indicating higher production of flavonoid and anthocyanin. Black sweet corn (BSC) exhibited good in vitro and cellular antioxidant abilities compared to many fruits and vegetables indicating that BSC could be developed as a substitute food with high anthocyanin profiles and antioxidant capacity. 相似文献
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《Crop Protection》2007,26(6):837-844
Field studies were carried out from 2002 to 2004 in an olive grove near Cairo, Egypt, to evaluate the efficacy of the mating disruption to control the olive pest Palpita unionalis, during the 1st (May–June) or the 1st and the 2nd (September–November) distinct flight periods. The binary blend of the two pheromone components, E-11-hexadecenyl acetate and E-11-hexadecenal, at the ratio of 70:30 in hexane was dispensed from polyethylene (PE) vials or absorbed into montmorillonite and dispensed from PE bags at a dose of 80 g active ingredients per hectare. Efficacy was measured considering suppression of pheromone trap catches, reduction of the moth population and fruit damage during harvest in the pheromone treated compared to the control (CO) plots. Male captures in treated plots were reduced by 91.3% (2002), 91.8% (2003) and 80.6% (2004) during trapping periods of 8, 21 and 20 weeks, respectively. The number of eggs recorded and fruit damage were lower in the pheromone treated than in CO plot. The fruit infestation accounted to 13.6±2.7% vs. 37.8±3.9% in 2003, a low fruiting year and 9.7±0.75 vs. 34.8±2.8% in 2004, a high fruiting year in treated and CO plots, respectively. Capillary GC analysis indicated that the release rate of E-11-hexadecenyl acetate was effective for the testing period; whereas the release and degradation of E-11-hexadecenyl were high, the inclusion of a photostabilizer into the pheromone-clay complex during 2004 improved substantially the release rate and photooxidation of the aldehyde. 相似文献
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夏秋季采制名优绿茶技术要则 总被引：2，自引：1，他引：1
在论述夏秋季气候特点和茶树生育特性的基础上，提出了采制夏秋名优绿茶应增加茶树轻修剪的频度与强度；及时追肥；控制病虫危害，保证茶叶质量安全；适时遮阴灌溉；适当提高采标准；适度鲜叶摊放；杀青匀透；短时轻揉；掌握火候，分次干燥等技术要则，为采制夏秋名优绿茶提供了技术参考。 相似文献
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植物生长调节剂的使用是棉花高产栽培的一项重要措施。南京森力助剂厂生产的高效农作物增产调节剂“力丰”对多种农作物具有增产作用 ,而且不降低作物的品质。本试验对力丰在棉花上的施用效果进行了研究 ,以探讨其对棉花生长发育的调节作用 ,及其对棉花形态、产量、品质等方面的影响 ,为力丰在棉花上合理使用提供参考。1 材料与方法试验于 2 0 0 0年在江苏省农科院经作所进行。试验田土壤为马肝土 ,肥力中等 ,地势平坦 ,排灌系统完善。棉花品种为苏棉 12号 ,采用营养钵育苗移栽 ,4月 18日播种 ,5月 17日移栽 ,密度 4 16 70株·ｈｍ- 2 。每… 相似文献
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A. M. Rizk F. M. Hammouda S. I. Ismail N. M. Hassan M. M. El-Missiry F. A. Ahmad 《Plant foods for human nutrition (Dordrecht, Netherlands)》1990,40(1):1-3
The study of the flavonoids of the unripe fruits ofGlossonema edule, resulted in the isolation and identification of apigenin 6,8-di-C-glucoside (violanthin) and luteolin 7-O-glucoside. 相似文献
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Chemical characterization of the essential oil from patchouli accessions harvested over four seasons
Arie Fitzgerald Blank Tricia Cavalcanti Pergentino Sant’anaPriscilla Santana Santos Maria Fatima Arrigoni-BlankAna Paula do Nascimento Prata Hugo Cesar Ramos JesusPericles Barreto Alves 《Industrial Crops and Products》2011,34(1):831-837
The genus Pogostemon of the Lamiaceae family includes several species known for their medicinal and aromatic properties. The species P. cablin is especially notable because the essential oil extracted from its leaves is internationally important and valuable, principally for the perfume and cosmetic industries. Because multiple factors can affect the chemical composition of the essential oil, the aim of this work was to evaluate the chemical variations in the essential oils of nine Pogostemon accessions harvested over four seasons. Two Pogostemon accessions (P. heyneanus, but received as P. cablin) and seven P. cablin accessions from different sources were evaluated. The transplants were planted in January 2008, and the harvests were conducted in May, August, and November 2008 and February 2009. The chemical composition of the essential oils was evaluated quantitatively and qualitatively. Patchoulol was the major compound from the four harvests of all of the P. cablin accessions. The principal compound from the accessions POG-001 and POG-006 was β-pinene. Two clusters were detected by multivariate analyses of the four harvests. Cluster I was formed by the accessions POG-001 and POG-006 (P. heyneanus), and Cluster II was formed by the accessions of P. cablin (POG-002, POG-014, POG-015, POG-016, POG-019, POG-021, and POG-022). 相似文献
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Prof. Dr. M. Plaut Eng. D. Lachover Mrs B. Cohen-Ascoli 《Plant foods for human nutrition (Dordrecht, Netherlands)》1953,1(3):263-277
Sommaire Les auteurs donnent un aperçu des essais faits avec six variétés de Cichorium Intybus cultivées et utilisées comme fourrage, comme plante pour pâturages et comme remplaçent le café. L'étude se rapporte aux conditions de la culture et des propriétés agronomiques de la Chicorée, la possibilité de sélection d'une variété spécialement adaptée aux conditions de l'Israel. Biologie, constitution chimique, fûmage etc. fûrent étudiés et les resultats obtenus démontrés sur 15 tableaux. 相似文献