以12个甜椒品种为材料,对低温胁迫下甜椒叶片的相对电解质渗出率、MDA含量、脯氨酸含量等生理指标的变化情况进行研究,结合相关性分析,采用隶属函数法对各甜椒的抗寒性进行综合评价。结果表明:随着处理温度的降低,甜椒叶片的相对电解质渗出率、MDA含量、脯氨酸含量均有不同幅度的升高,不同品种间的升高幅度有所差异。根据隶属函数法的综合评价结果,‘中椒4号’、‘多福’、‘中椒8号’‘中椒105号’为高抗寒品种,‘金华星’和‘冠军椒王’为低抗寒性品种,其他6个品种为中抗寒品种。

Under the low temperature stress , 12 sweet pepper varieties were comprehensively evaluated using subordinate function method combined with correlation analyses based on the relative electric conductivity ,MDA content ,and proline content . The results showed that , with the temperature decreasing , the relative electric conductivity ,the content of MDA ,and the content of proline in sweet pepper leaf were increasing .Different sweet pepper varieties had different responses to continuous cold stress . Among them ,''Zhongjiao No.4'',''Duofu'',''Zhongjiao No.8'',''Zhongjiao No.105''were high cold tolerance ,''Jinghuaxing''and''Guanjunjiaowang''were low cold tolerance ,the other 6 varieties were moderate cold tolerance .

近几年甜椒价格出现了较为频繁的波动，该文在回顾农产品价格波动相关研究的基础上，利用X-12-ARIMA季节调整方法分别对甜椒生产价格和消费价格的时间序列进行季节调整后作趋势分析和建模分析，从而揭示甜椒价格波动的内在机制。

The price of sweet pepper has been more frequently fluctuated in recent years. Based on the relative researches on the price fluctuations of agricultural products, this article made the trend analysis and modeling analysis after the season-al adjustment on time series of the production price and consumption price of sweet pepper by using the X-12-ARIMA sea-sonal adjustment method, so as to reveal the internal mechanism of price fluctuations in sweet pepper.

概述了近年来我国在甜椒育种中取得的主要研究进展,介绍了选择育种、杂交育种、航天诱变育种、花药培养育种、基因工程育种等方面的研究成果,并提出了我国甜椒育种的发展方向。

The main research progresses of sweet pepper breeding in recent years in China were summarized .The research a-chievements in selective breeding , hybrid breeding, spaceflight mutation breeding, anther culture breeding, and gene engineering breeding were introduced.In addition, the developmental direction of sweet pepper breeding in the future in China was discussed .

研究了淹水胁迫对嫁接甜椒幼苗抗氧化酶活性和渗透调节物质含量的影响，结果表明：随着淹水胁迫时间延长，嫁接甜椒苗丙二醛（MDA）含量和O2-·生成速率增加，嫁接苗含量显著低于自根苗；超氧物歧化酶（SOD）、过氧化物酶（POD）、脯氨酸和可溶性糖含量均表现上升的趋势，以上指标嫁接苗均高于自根苗。由此可知，淹水胁迫下嫁接苗有较高的抗氧化酶活性和较低的氧化损伤，从而增强甜椒的耐淹水性。

The experiments were carried out to study the impacts of flooding stress on the antioxidant enzyme activities and os -moregulatory substance content of the grafted sweet pepper seedlings .The results showed that the MDA content and O 2-? produ-cing rate were significantly increased along with the prolonging of the flooding stress time , and the MDA content of the grafted seed-lings was significantly lower than that of own -rooted seedlings;the activities of SOD and POD, as well as the contents of proline and soluble sugar of the grafted seedlings revealed a rising trend and significantly higher than those of own -rooted ones.The above results indicated that the grafted seedlings under flooding stress were higher in antioxidant enzyme activities and less in oxidative damage, thus it strengthened the water -logging tolerance of sweet pepper .

利用腐熟玉米秸秆、棉籽壳菇渣与草炭和蛭石按照不同的比例组配成复合基质,进行番茄和甜椒穴盘育苗的结果表明:番茄穴盘苗培育以等体积的棉籽壳菇渣、草炭、蛭石混配基质的效果最好,其次是等体积玉米秸秆、草炭、蛭石混配的基质;玉米秸秆2 V、蛭石1 V混配的基质适于甜椒穴盘育苗,其次是等体积的棉籽壳菇渣、草炭、蛭石混配的基质。合理使用腐熟玉米秸秆和棉籽壳菇渣可以减少草炭用量,改善基质理化性状,促进番茄和甜椒幼苗生长,培育优质壮苗。

The maize straw compost,mushroom residue compost,peat and vermiculite were used to composite different complex media for tomato(Solanum lycopersicum L.)and sweet pepper(Capsicum annuumL. var. grossum Bailey)seedling.Comprehensive indexes such as seedling growth,seedling index,physiological activity,indicated that the media of mushroom residue compost+ peat+ vermiculite(1∶1∶1,V/V)had the best effect on tomato seedling,the next was the media of maize straw compost+ peat+vermiculite(1∶1∶1,V/V). The media of maize straw compost+vermiculite(2∶1,V/V)had the best effect on sweet pepper seedling,and the next was mushroom residue compost+peat+vermiculite(1∶1∶1,V/V).The results showed that mushroom residue compost and maize straw compost could improve the physical and chemical characteristics of complex media,promote tomato and sweet pepper seedling growth,and cultivate healthy seedlings with high quality.