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1.
The lodicules expand rapidly when the rice florets are opening, and the filaments elongate and the stigmas extend and bend. All these growing movements are caused by the cell elongation or expansion after water absorption. The lodicules, filaments, and stigma will wither after flowering, but the cause of the withering remains unknown. In some wild abortive male sterile lines, the closing of florets  相似文献   

2.
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3.
The objective of this study was to determine effect of storage time, storage temperature and addition of fibre on sensory quality, state of water, microstructure and texture of bread and dough.  相似文献   

4.
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5.
This study aimed to evaluate the effect of processing steps on bioactive compounds and physicochemical and rheological characteristics of a juçara, banana and strawberry smoothie. The product was obtained by mixing the pulps of these fruits in previously defined proportions. The mixture was standardized in a pilot disintegrator, homogenized at 60 MPa in continuous mode and pasteurized at 90 °C for 35 s. The homogenization step increased the concentration of cyanidin-3-O-glucoside and cyanidin-3-O-rutinoside, major anthocyanins in the smoothie. However, these anthocyanins, as well as perlagonidin-3-O-glucoside, have been reduced (p<0.05) after the pasteurization step. The pasteurization also affected the instrumental color of the smoothie, expressed by Hue angle (p<0.05). Regarding to the rheological behavior, the smoothie, in all processing steps, presented a non-Newtonian fluid behavior with pseudoplastic characteristics (n<1). After homogenization, the smoothie became more fluid and homogeneous. Thus, despite the negative impact of pasteurization on the smoothie’s color, the pasteurized product preserves the bioactive compounds such as flavonoids and phenolic acids that are of great importance to human health. Furthermore, the development of this product contributes to add value to the juçara agro-chain and Atlantic Forest preservation.  相似文献   

6.
One hundred and twenty-nine isolates of Magnaporthe grisea from Guangdong, Guangxi, Anhui and Jiangsu provinces of China were tested for resistance frequency to kitazin P and carbendazim, respectively by the distinctive concentration method. The resistance frequency of the isolates to kitazin P which had not been used in practice for about ten years was as high as 79.1%, and only one carbendazim-resistant isolate was detected in Gaoyao, Guangdong Province (with a frequency of 0.78%). Meanwhile, the minimum inhibition concentration (MIC) of hyphal melanization was adopted to detect the sensitivity of M. grisea to tricyclazole. There existed several different degrees of sensitivity to tricyclazole in the melanin biosynthesis of M. grisea, but no relationship was found between these MIC values completely inhibiting melanization in hyphae and the EC50 values of tricyclazole against rice blast tested in vivo. After the isolates were induced by chemical taming or UV irradiation in laboratory, kitazin P-resistant and carbendazim-resistant mutants were recovered by both the methods, but none of tricyclazole-resistant mutant was obtained.  相似文献   

7.
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8.
Cd, Pb, Cu, Zn, and As are typical pollutants originated from Pb-Zn mine, smelting waste water discharge/irrigation and gas emission,and they were distributed widely in China. We studied the compound pollution of Cd, Pb,Cu, Zn, and As on rice.  相似文献   

9.
In recent years ,it has been demonstrated that the low-level jet streams (LLJs) developed in the south of the Meiyu(Baiu) front play a critical role in the overseas migrations of the planthoppers into Japan and Korea. However, the involement of the LLJs during the process of sequential displacements of rice planthoppers in China has not been clarified yet. In the present studies, the synoptic meteorological factors including LLJs associated with the  相似文献   

10.
A. Sonnino 《Potato Research》2000,43(4):395-445

Report

Report of the joint meeting of the Potato Section of EUCARPIA and the Section Breeding and varietal assessment of the EAPR, 3–7 July, 2000, Warsaw (Poland)  相似文献   

11.
Plant Foods for Human Nutrition - As diets change in response to ethical, environmental, and health concerns surrounding meat consumption, fermentation has potential to improve the taste and...  相似文献   

12.
Ｕｎｉｃｏｎａｚｏｌ，（Ｅ）＿１＿（４＿ｃｈｌｏｒｏｐｈｅｎｙｌ）＿４，４＿ｄｉｍｅｔｈｙｌ＿２（１，２，４＿ｔｒｉａｚｏｌ＿ｌ＿ｙｌ）＿１＿ｐｅｎｔｅｎ＿３＿０１，ｎａｍｅｄＳ３３０７，ｉｓａｎｅｗｐｌａｎｔｇｒｏｗｔｈｒｅｔａｒｄａｎｔｔｈａｔｃａｎｒｅｔａｒｄｔｈｅ ｇｒｏｗｔｈｏｆ ｐｌａｎｔｓ，ｍａｋｅ ｐｌａｎｔｄｗａｒｆ，ｐｒｏｍｏｔｅｒｏｏｔａｎｄｔｉｌｌｅｒｇｒｏｗｔｈ，ｄｅｌａｙｔｈｅｓｅｎｅｓｃｅｎｃｅｏｆｌｅａｖｅｓ，ａｎｄｉｎｃｒｅａｓｅｔｈｅｎｅｔｐｈｏｔｏ ｓｙｎｔｈｅ…  相似文献   

13.
The competitive adsorption of bisphenol A (BPA) and17α-ethinylestradiol (EE2) with different endocrine disrupting compounds (EDCs), such as estrone (E1), β-estradiol (E2), and estriol (E3) was investigated in the water-sediment system. The primary and interaction effects of coexisted EDCs on the adsorption of BPA and EE2 were studied in binary and multiple systems. The adsorption selectivity of sediment at different initial concentrations of EDCs was also considered, based on the distribution coefficient (β). In binary systems, coexisted EDCs exhibited a positive effect on the adsorption of BPA, while E3 showed a negative effect on the adsorption of EE2. In ternary systems, the interaction of E1*E3 and E2*BPA showed a synergistic effect on the sorption of BPA and EE2, respectively. In quaternary systems, the interaction of E1*E2*E3 showed a synergistic effect on the adsorption of both BPA and EE2. In the quinary system, coexisted EDCs all showed an antagonistic effect on the adsorption of BPA and EE2, which indicated that the coexisted EDCs competed for adsorption with BPA and EE2. EDCs in the E2-EE2-BPA system presented a superior selectivity of sediment with β values of 43.48–87.86. The order of sediment selectivity (E1 > EE2 > E2 > E3 > BPA) in binary systems was in agreement with EDCs’ adsorption capacity, which suggested that the adsorption was dominated by partition adsorption.  相似文献   

14.
Plant Foods for Human Nutrition - Rutin possesses a wide range of application prospects with various bioactivities. However, its bitter and water-insoluble properties restrict its application in...  相似文献   

15.
This paper presents the synthesis of metal complex acid dyes obtained from the reaction of o,o′-dihydroxyazo dyes and chromium and cobalt sulfate. The 1H-NMR, FT-IR and UV/Visible Spectrophotometer, TLC (Thin Layer Chromatography) and ICP (Ion Chromatography) of the intermediates and the metal complexes were studied and compared. Their properties such as dyeing, fastness and toxicity on nylon were also assessed according to standard methods.  相似文献   

16.
Nylon 4/6 copolymers based on 2-pyrrolidone (C4) and ε-caprolactam (C6) were synthesized and characterized as part of ongoing efforts to develop thermally stable, melt-processable 2-pyrrolidone (C4) based Nylons. Copolymers of various compositions were synthesized at between 50 and 100 °C via the anionic ring opening polymerization of C4 and C6 using a potassium tert-butoxide catalyst and a benzoyl chloride initiator. The polymers were characterized by NMR spectroscopy, DSC, TGA, GPC, intrinsic viscosity measurements, and X-ray scattering (SAXS and WAXS). Their chemical compositions and sequence distributions were obtained by 1H- and 13C-NMR spectroscopies, respectively. X-ray scattering was used to investigate the lamellar morphologies and the crystal structures of solvent cast films of the copolymers. WAXS revealed the presence of α-phase crystals in the copolymers. TGA data coupled with molecular weight and sequence distribution information indicated that the polymers’ thermal stability depended on both their chemical composition and their sequence distribution.  相似文献   

17.
A strain B34 against Thanatephorus cucumeris was screened from rice plants. Lab and field experiments showed that the control effects of this fungal strain were better than that of Jinggangmycin on PDA plate. Based on the chemical components of cell wall and physiological and biochemical characters of B34, the fungal was named as Pseudomonas aureofaciens. It was a new antagonistic strain against Thanatephorus cucumeris.  相似文献   

18.
Different hulled barley cultivars were subjected to roasting in hot sand (280 °C) and the effects on β-glucan extractability, physico-chemical, thermal and pasting properties were studied. The grain puffed upon roasting and grain hardness and colour difference ΔE were significantly lowered. The roasted barley flour had significantly higher water absorption and water solubility index. The cultivars DWR-28, RD-2503 and PL-172 had the highest total β-glucan content (up to 5.47%). Roasting brought about a decrease in the soluble β-glucan content in all the cultivars and this decrease ranged from 4.9 to 25.3%. The β-glucan extractability was not affected by the roasting process but roasting lowered the ratio of soluble to insoluble β-glucan content by 8.1–41.9%. Roasting significantly affected the pasting and thermal properties of the flours, together with an increase in the cooked starch content that ranged from 28.8 to 43.1%.  相似文献   

19.
In order to determine the absolute configuration of naturally occurring alloxanthin, a HPLC analytical method for three stereoisomers 1a–c was established by using a chiral column. Two authentic samples, (3S,3′S)- and meso-stereoisomers 1b and 1c, were chemically synthesized according to the method previously developed for (3R,3′R)-alloxanthin (1a). Application of this method to various alloxanthin specimens of aquatic animals demonstrated that those isolated from shellfishes, tunicates, and crucian carp are identical with (3R,3′R)-stereoisomer 1a, and unexpectedly those from lake shrimp, catfish, biwa goby, and biwa trout are mixtures of three stereoisomers of 1a–c.  相似文献   

20.
PGMR(Photoperiod sensitive Genic Male-sterile Rice) Nongken 58s was discovered in 1973 by SHI Mingsong,  相似文献   

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