Beta frequently used as rootstock in China was susceptible to phylloxera. Phylloxera survived at 38.82%~47.5% and produced 9.01 eggs per day on Beta, while the corresponding values were 25%~30% on concord and compbell and 6.00~6.85 eggs per day on concord, campbell and catawba. Both Hei Huxiang and White Banana of Vitis vinifera-V. amerancain were susceptible to phylloxera, on which phylloxera yielded more than 190 eggs totally despite their survival was down-regulated and development arrested to some extent. All V. vinifera and cross cultivars of V. vinifera-V.

我國當(dāng)作砧木使用的貝達(dá)不抗根瘤蚜在线日本高清日本免费网站，接種后蚜蟲存活率始終保持在38.82%~47.5%黄色视频在线观看www小说，日產(chǎn)卵量達(dá)9.0191网免费在线观看；歐美雜交種中的康克玩成熟老熟女视频二区、康拜爾和卡它巴對根瘤蚜稍有抗性乌克兰级婬片A片AAA毛片A级，根瘤蚜日產(chǎn)卵量在6.00~6.85粒之間国产对白高跟丝袜97在线，其中康克、康拜爾葡萄上蚜蟲的存活率隨時間的延長而明顯降低欧美调教成人影院在线播放视频网站，由最初的60%下降至25%~30%动漫精品一级AV片在线观看；歐美雜交種中的黑虎香和白香蕉雖然在一定程度上能夠限制根瘤蚜的存活和發(fā)育進程，但對根瘤蚜的繁殖量沒有影響。

In the the late 19th century, the world's wine industry was almost destroyed due to the phylloxera epidemic.

在19世紀(jì)末美女高潮刺激潮喷免费网站，一種葡萄根瘤蚜的病菌幾乎導(dǎo)致整個葡萄酒業(yè)的滅亡国产精品国产三级A√按摩。

The grape is the fruit preferences, but serious grape phylloxera, has been identified as the main quarantine objects at home and abroad.

葡萄是人們喜好的水果之一，但葡萄根瘤蚜危害嚴(yán)重成年人在线免费网站，已被列為國內(nèi)外主要檢疫對象欧美性爱影音先锋俄罗斯。

Research on the occurrence of grape phylloxera symptoms, pathogen characteristics, infection process, the occurrence of the conditions, as well as control methods, thereby enhancing the production of grapes.

研究葡萄根瘤蚜發(fā)生的癥狀、病原特征狂野欧美精品aⅴ、侵染過程美女福利网站导航、發(fā)生條件、以及防治方法无码的免费的毛片视频日韩，從而提高葡萄的產(chǎn)量狼友视频永久在线在线视频。

Some urgent problems like biological invasion, especially the threat of phylloxera have challenged to the traditional self-root cultivating pattern, therefore it was necessary to propagate cultivars by grafting on resistant rootstocks.

當(dāng)前面臨著外來生物入侵，特別是葡萄根瘤蚜威脅久操视频是精品，以品種自根系栽培的傳統(tǒng)模式受到挑戰(zhàn)一级看片久久网，用抗勝砧木嫁接繁殖苗木勢在必行。

In this study, laboratory bioassays were carried out for rapid initial evaluation on the resistance of 10 grape rootstocks and 18 cultivars to Chinese biotypes of grape phylloxera, Daktulosphaira viticola. The survival ratio, developmental duration, egg number and index for population age constitution were evaluated.

為了檢測我國葡萄品種和砧木對中國生態(tài)型葡萄根瘤蚜Daktulosphaira viticola的抗性永久自慰网站喷水，在實驗室條件下采用離體根接種法鑒定了10個葡萄砧木色五月综合在线、18個葡萄栽培品種，測定了根瘤蚜存活率国产专区精品调教捆绑在线播放、發(fā)育歷期在线观看视频网站黄色、產(chǎn)卵量、種群齡期結(jié)構(gòu)指數(shù)和成蟲大小等指標(biāo)肏屄毛片。

To probe into either the attractiveness to or avoidance from phylloxera of grape rootstocks and cultivars with different tolerance, as well as into the volatile components from their roots, the method of invitro root segment culture was used to investigate the selectivity of Phylloxera viticola Fitch to the roots of grape rootstocks '5BB' and '140Ru' and cultivar 'Kyoho'.

為了探討不同抗性水平砧木及品種對根瘤蚜吸引及驅(qū)避效應(yīng)以及鑒定揮發(fā)性物質(zhì)組分啪啪啪官网，采用離體根段培養(yǎng)法測定葡萄根瘤蚜Phylloxera viticola Fitch對砧木5BB，140 Ru及栽培品種巨峰的選擇性呦av网站，發(fā)現(xiàn)根瘤蚜對栽培品種巨峰的根段具有很強的選擇性激情视频小说图片，至接種后3d，67.13%的根瘤蚜優(yōu)先選擇巨峰www.在线视频.com；而對5BB和140 Ru的選擇性卻很差日韩国产综合在线，分別有15.29%和17.58%的根瘤蚜選擇5BB及140 Ru。

Results showed that the rootstocks RSB, Gravesac, 520A and 225R were immune to phylloxera infestation. Fercal, 1613C and the HPDs was resistant to phylloxera to some extent, whose tuberosities % were less than 27%. The Both Henan wild grapes and V. adenocluda were highly sensitive to phylloxera,whose tuberosities were 66.25% and 56.67% and phylloxera produced 181.67 and 277.67 eggs on each of them; V.guangxi-quinquangularis had low resistance, whose tuberosities were 15.45%, its hybrid with a V.vinifera variety NW196 was sensible to phylloxera, whose tuberosities and egg number phylloxera produced were 46.13% and 55.28% higher than V. guangxi-quinquangularis.

結(jié)果表明：砧木RSB黄色国产精品自拍视频网站、Gravesac、520A和225R對根瘤蚜免疫青草青草久久伊人热，砧木Fercal日日夜,人人操、1613C和供試的種間雜種對根瘤蚜有一定抗性，根瘤比例均低于27%国产在线视频小说在线观看；河南野葡萄和腺枝葡萄對根瘤蚜敏感99ryav1，根瘤比例分別為66.25%和56.67%，總產(chǎn)卵量分別達(dá)到181.67粒和277.67粒，廣西毛葡萄對根瘤蚜有一定抗性欧美一级日韩片，根瘤比例為15.45%人人干人人看另，其與粉紅玫瑰的雜交后代NW196抗性下降，產(chǎn)卵量與根瘤比例分別比廣西毛葡萄高46.13%和55.28%五月天色欲综合网。

The resistance of 20 Vitis vinifera varieties, 18 V. vinifera- V. labrusca varieties, 11 hybrides producteurs direct, 6 grape rootstocks, 3 wild grapes and 1 hybrid of wild grape and V. vinifera to grape phylloxera (Daktulosphaira vitifoliae Fitch ) were evaluated. The survival ratio, number of eggs,phylloxera and the tuberosity were evaluated.

采用離體根接種法對葡萄20個歐亞種久久偷窥视频、18個歐美雜種、11個種間雜種直接生產(chǎn)者HPD曰本性l交片视频视频、6種砧木禁止看黄片、3個野生種和1個野生種與歐亞種的雜交后代接種葡萄根瘤蚜 Daktulosphaira vitifoliae ，測定根瘤蚜生長發(fā)育相關(guān)指標(biāo)及根瘤比例a片av在线播放。

The grape is the fruit preferences, but serious grape phylloxera, has been identified as the main quarantine objects at home and abroad.

摘 要：葡萄是人們喜好的水果之一一级艳片真人视频观看，但葡萄根瘤蚜危害嚴(yán)重，已被列為國內(nèi)外主要檢疫對象操操操射射射干干干。