无公害软子石榴病虫害综合防治技术

采用无公害防治技术防治软子石榴病虫害,不仅可以提高石榴产量．更重要的是可以提高石榴的品质和经济价值。该文介绍的石榴病虫害无公害防治技术,适合苏北石榴产区推广应用。     

重庆地区地栽金佛手栽培管理技术

重庆地区为一般柑橘种类的适宜种植区,但由于冬季光照不足,4—6月多阴雨天气,采用普通的柑橘栽培管理技术种植金佛手难以成功。经过几年的试验和栽培管理实践,在普通柑橘栽培管理技术的基础上加以改革和创新,使大田种植金佛手获得成功。主要技术措施包括:定植时垒土栽培,秋季重剪,喷施多效唑促花,喷施赤霉素保花保果,人工疏花疏果,抹梢打顶,巧施叶面肥等。     

罗布麻的开发利用价值及栽植技术

罗布麻是一种耐旱、耐盐碱、耐严寒酷暑、抗风力强,具有纤维价值和药用价值的野生优良水土保持植物,生态效益和经济效益俱佳。其繁殖方法可采取播种育苗和根切段繁殖,管理上应注意水肥管理、病虫害防治和适时采收。     

山地石榴栽培技术及水土保持效益分析

为了充分利用荒山、荒坡土地资源的优势，加快山区经济发展速度，从１９９０年起，引石榴进山上坡。历时４年，完成了山地石榴栽培技术试验与蓄水保土效益分析，并探索出石榴败育花的成因和提高座果率的途径，以及提高石榴品质，优质，高产的栽培技术措施，全市发展山地石榴２．７万亩，１９９３年鲜果产量６３．２３万Ｋｇ，实现经济效益３０７．２万元。     

不同镉污染改良剂对姬松茸床栽和袋栽的影响

本试验采用袋栽和床栽姬松茸的方式研究不同改良剂的改良效果及其不同浓度对菌丝的生长速率、生物转化率和菇镉含量的影响。结果表明：（１）改良剂可以使袋栽姬松茸的镉含量降低１６．６％～４２．４％,其中三种改良剂可以使袋栽姬松茸的镉含量降低３１．０％～４２．４％,使床栽姬松茸的镉含量降低１４．５％～３５．６％。（２）随着改良剂浓度的升高,袋栽菌丝的生长速率、生物转化率受到抑制的程度就越大,而菇中的镉含量随着     

早稻抛栽的平衡施肥技术研究

通过在浙东平原地区主要土壤上连续两年的抛栽早稻施肥技术试验，摸清了抛栽早稻的氮、钾肥适宜用量和施肥方法，并对施用第二次分蘖肥的必要性和施钾抗倒效果作了探讨。     

袋栽黑木耳高产高效技术要点

黑木耳含有多种营养成分,具有一定的药用价值,深受人们喜爱。目前黑木耳栽培方式主要有两种,即椴木栽培和袋料栽培,由于召陵区地处中原腹地,木材资源相对短缺,椴木栽培方式受到了严重的限制,利用杂木屑、玉米芯等农副产品资源进行袋料栽培黑木耳,     

水稻机械化育插秧的技术要点

水稻机械化育秧插秧技术是采用规范育秧、机械化插秧的水稻移裁技术,可以降低劳动强度,实现水稻生产的高产稳产、节本增收。结合生产实际,介绍水稻机械化育插秧和田间管理的关键技术。     

南河渡石榴优质丰产栽培技术

南河渡石榴基地地处豫西丘陵地区 ,干旱少雨 ,土地资源利用率低。通过选育优良品种、科学整枝与施肥、合理灌排、疏花疏果、促使座果、果实套袋、病虫防治、化促落叶、越冬防寒十项栽培技术的推广和实施 ,显著提高了该地区石榴的产量和品质 ,并且创造了较好的经济效益和社会效益     

应用ABT生根粉及地膜覆盖法扦插石榴效果好

<正> 石榴花色红而艳丽,花期长达数月,其果实形美色鲜,籽粒晶莹多汁,味道酸甜可口,富含糖分和维生素C,而且耐贮藏、便运输,是一种深受人们喜爱的水果.石榴具有根系发达、萌蘖力强、枝叶茂盛、耐干旱、耐瘠薄、耐严寒、适应性强的特性,是一种很好的水保经济植物.     

Monoacylglycerol from Punica granatum seed oil.

The seeds of Punica granatum, known as hap roman in the Arabian Peninsula, are commonly eaten as a dessert. As part of an ongoing project to find nonnutritional natural products which have health benefits, or that can be exploited to protect crops, the chloroform-soluble extract of the fermented seeds of P. granatum was found to be rich in 1-O-trans,cis,trans-9,11,13-octadecatrienoyl glycerol (1). The seed oil is not lethal to brine shrimp larvae. 1-O-isopentyl-3-O-octadec-2-enoyl glycerol (2) and the known cis-9-octadecenoic, octadecanoic, and eicosanoic acids were also detected in small amounts in the seed oil by LC and MS. The structure of 1 was determined from NMR and MS spectral data.     

苦丁茶的栽植技术及开发利用价值

苦丁茶是一种生存能力极强的常绿乔木,分布广,数量多,生长快,耐病虫害,适应性广,种植技术简单,易于管理,是一种生态、经济效益俱佳,能使山区群众脱贫致富奔小康的理想树种。阐述了苦丁茶的水保功能、经济效益及培育技术。     

Albania, the domestication country for pomegranate (Punica granatum L.)

A special discussion, regarding the domestication of wild pomegranate (Punica granatum L.) in Albania, has first started in 1995. This discussion triggered a study that continued for the next several years. This research resulted in the identification of a wild pomegranate belt of about 300?km, along the Adriatic and Ionian coastline of the western part of Albania. Considering the results of this study regarding morphological, biological and biochemical assessments, toponymic and linguistic data, it is revealed that there are some indications that pomegranate could have been domesticated in Albania independently from other regions.     

Partial identification of antifungal compounds from Punica granatum peel extracts

Aqueous extracts of pomegranate peels were assayed in vitro for their antifungal activity against six rot fungi that cause fruit and vegetable decay during storage. The growth rates of Alternaria alternata , Stemphylium botryosum , and Fusarium spp. were significantly inhibited by the extracts. The growth rates were negatively correlated with the levels of total polyphenolic compounds in the extract and particularly with punicalagins, the major ellagitannins in pomegranate peels. Ellagitannins were also found to be the main compounds in the bioactive fractions using bioautograms, and punicalagins were identified as the main bioactive compounds using chromatographic separation. These results suggest that ellagitannins, and more specifically punicalagins, which are the dominant compounds in pomegranate peels, may be used as a control agent of storage diseases and to reduce the use of synthetic fungicides.     

Genetic structure,clonality and diversity in commercial pomegranate (Punica granatum L.) cultivars

Genetic Resources and Crop Evolution - The pomegranate fruit is one of the most important horticultural products due to the presence of polyphenols, anti-oxidant and anti-fungal compounds. In the...     

Diversity of pomegranate (Punica granatum L.) germplasm in Tunisia

Thirty pomegranate (Punica granatum L.) accessions were studied to determine the overall degree of polymorphism and to detect similarities among genotypes. PCA and cluster analysis showed a considerable phenotypic and genetic diversity in the local pomegranate germplasm. Some polyclonal varieties were identified and cases of homonymy were detected. The geographic origin was not a determinant criterion for cultivars clustering. Parameters with high discriminating values were those related to fruit size and color and juice characteristics. Factors affecting pomegranate germplasm diversity are discussed.     

Morpho-pomological and chemical properties of pomegranate (Punica granatum L.) cultivars in Iran

This study was conducted to investigate the physico-chemical properties and antioxidant activity of five pomegranate fruit (Punica granatum L.) cultivars grown in Iran. Significant differences were found among the pomegranate cultivars for many of the properties studied. Results showed that, in particular, fruit diameter ranged from 63.63 mm (Syah) to 79.29 mm (Rabab), fruit volume from 153.3 cm³ (Syah) to 293.3 cm³ (Rabab), and fruit density from 0.93 g cm^?3 (Rabab) to 1.13 g cm^?3 (TorshSefeed). Although Syah showed the lowest fruit weight (144.8 g), fruit yield (8.28 ton ha^?1), and fruit skin thickness (1.55 mm), Rabab had the highest fruit yield (27.1 ton ha^?1) and fruit skin thickness (2.32 mm). Juice volume was found to vary between 61.1 and 67.0 cm³. Percent of aril ranged from 59.64% (Rabab) to 75.3% (Syah) and weight of aril between 108.9 and 199.8 g. Also, results indicated that titratable acidity content varied from 0.39% (Syah) to 1.13% (TorshSefeed). The total soluble solids content varied from 12.67 ?Brix (TorshSefeed) to 15.67 ?Brix (ZardehAnar), pH values from 3.05 to 3.77, Electrical conductivity values from 2.8 to 3.14 dS m^?1_, and vitamin C content from 59.25 to 69.52 mg 100 g^?1. The anthocyanin content was observed to vary between 80.36 (Syah) and 216.97 (ZardehAnar). The antioxidant activity of pomegranate cultivars ranged from 27.24% (Syah) to 84.04% (TorshSefeed). These results demonstrated that the cultivar was the major factor which influences the morpho-pomological and chemical (especially, antioxidant activity) properties of pomegranates.     

Isolation and identification of two lipid transfer proteins in pomegranate (Punica granatum)

Lipid transfer proteins (LTPs) are a family of low molecular mass (7-9 kDa) polypeptides, the members of which share 35-95% sequence homology. These proteins are widely distributed throughout the plant kingdom and are receiving attention for their biochemical characteristics and biological activity. LTPs are indeed studied in different research fields varying from allergy to food technology, and numerous molecules belonging to this class are progressively being identified and investigated. Proteins from pomegranate juice were fractioned by cation exchange chromatography and analyzed by SDS-PAGE. Two proteins were identified as putative LTPs on the basis of their molecular weights and their electrophoretic behaviors under reducing and nonreducing conditions. Finally, proteins were purified and characterized by mass spectrometry. This analysis confirmed that the two polypeptides are LTPs on the basis of an amino acid sequence common to LTPs from other plant sources and cysteine content. The two proteins, named LTP1a and LTP1b, showed similar molecular masses but different immunological profiles when immunodetected with rabbit antibodies specific for Pru p 3 and human IgE from a patient suffering from pomegranate allergy. The demonstration of the existence of two immunologically unrelated LTPs in pomegranate confirms the variability and the complexity of the plant LTP family. This should be taken into account when the role of these proteins as elicitors of allergies to fruits is investigated and could help to explain the contradictory literature data on pomegranate allergy.     

Storage protein and amino acid contents of Tunisian and Chinese pomegranate (Punica granatum L.) cultivars

In the present study, free amino acids and seed protein contents of pomegranate germplasm from Tunisia and China were conducted using Hitachi L8800 amino acid analyzer, Bradford and Kjeldahl methods. The work offers more consideration to protein pomegranate seeds which can be with great importance regarding the nutritive seed value of this crop. In other hand, the protein and amino acids contents were used to compare the Tunisian and Chinese pomegranate cultivars based on multivariate analyses (principal component and clustering analyses). Results show that the Tunisian and Chinese pomegranate seeds were rich in storage proteins independently of organoleptic taste as sweet, sour sweet or sour. Qualitatively, the storage protein and free amino acids of pomegranate seeds were identical. Besides, the segregation of Chinese and Tunisian pomegranate cultivars into three groups was reveled based on high, low or moderate amino acids contents. Statistically, the differences between organoleptic groups (sweet, sour sweet and sour) were not significant (P?<?0.05). However, the differences between pomegranate cultivars were statistically significant within groups. The separation of cultivars is independent to the organoleptic taste neither the geographical origin.