scholarly journals Multiple Evolutionary Events Involved in Maintaining Homologs of Resistance to Powdery Mildew 8 in Brassica napus

2016 ◽  
Vol 7 ◽  
Author(s):  
Qin Li ◽  
Jing Li ◽  
Jin-Long Sun ◽  
Xian-Feng Ma ◽  
Ting-Ting Wang ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Powdery Mildew

scholarly journals First Report of Powdery Mildew Caused by Erysiphe cruciferarum on Brassica napus in China

Plant Disease ◽  
2015 ◽  
Vol 99 (11) ◽  
pp. 1651-1651 ◽  
Author(s):  
J. T. Alkooranee ◽  
S. Liu ◽  
T. R. Aledan ◽  
Y. Yin ◽  
M. Li
Keyword(s):  
Brassica Napus ◽  
Powdery Mildew ◽  
First Report ◽  
Erysiphe Cruciferarum

Cultivar resistance offers the first opportunity for effective management of the emerging powdery mildew (Erysiphe cruciferarum) threat to oilseed brassicas in Australia

2016 ◽  
Vol 67 (11) ◽  
pp. 1179 ◽  
Author(s):  
M. B. Uloth ◽  
M. P. You ◽  
M. J. Barbetti
Keyword(s):  
Brassica Napus ◽  
Powdery Mildew ◽  
Effective Management ◽  
Cultivar Resistance ◽  
Resistant Cultivars ◽  
Progress Curve ◽  
Erysiphe Cruciferarum ◽  
Effective Option ◽  
Oilseed Brassicas ◽  
The Impact

Powdery mildew of brassicas, caused by Erysiphe cruciferarum, is an emerging threat to oilseed Brassica production in Australia. Resistance to powdery mildew was assessed in 112 current and historic Australian Brassica napus canola cultivars and five cultivars of B. juncea mustard cultivars under controlled environmental conditions. Only 18% of leaf area was infested by the end of the test on the most resistant cultivars, compared with means of up to 70% for the most susceptible cultivars as well as severe stem and pod infection. For B. napus, cultivars with the greatest potential for reducing the impact of powdery mildew in the field were Trooper, Bravo TT, Summit, Tumby, Narendra and Hyola 650TT, all ranked in the 10% of cultivars with the lowest leaf infestation (Area Under The Disease Progress Curve (AUDPC) <537) and with <10% of stem area infested. For B. juncea, the level of leaf infestation was lowest for Sahara CL and Xceed X121 CL (AUDPC 303 and 380 respectively), but the high levels of stem infestation (42% and 28% respectively) in these cultivars may reduce their usefulness in the field. The most resistant cultivars identified can be immediately deployed into regions where powdery mildew is prevalent, providing the canola industry with an immediate and effective option for management of this increasingly troublesome disease.

Powdery mildew-resistant UG3 and UG4 rutabaga germplasm

1993 ◽  
Vol 73 (1) ◽  
pp. 301-302 ◽  
Author(s):  
V. I. Shattuck
Keyword(s):  
Disease Resistance ◽  
Brassica Napus ◽  
Powdery Mildew ◽  
Key Words ◽  
Root Morphology ◽  
Average Weight ◽  
Powdery Mildew Disease

UG3 and UG4 rutabaga (Brassica napus ssp. rapifera) germplasm lines are highly resistant to powdery mildew, and are suitable for developing powdery mildew-resistant B. napus cultivars. The lines were derived from a powdery mildew-resistant rutabaga mutant. Both lines are self-fertile, yield average weight roots that store well, but lack optimal root morphology. Key words: Rutabaga, germplasm, powdery mildew, disease resistance

scholarly journals SCREENING OF VARIETAL SAMPLES OF SPRING RAPESEED (Brassica napus L.) FOR RESISTANCE TO PHYTOPATHOGENS

2019 ◽  
pp. 50-55
Author(s):  
Игорь Пастухов ◽  
Igor Pastukhov ◽  
Владимир Карпачёв ◽  
Vladimir Karpachev ◽  
Елена Кобзева ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Powdery Mildew ◽  
Research Work ◽  
Weather Conditions ◽  
Scientific Research Institute ◽  
Brassica Napus L ◽  
Russian Scientific ◽  
Russian Scientific Research Institute ◽  
Resistance To Phytopathogens ◽  
Degree Of Damage

Diseases are one of the reasons for the decline in yield of rape. Breeders are to create resistant to diseases and pests varieties and hybrids of rape because this culture is widely used in Russia. Nowadays we know about 30 pathogens of cabbage cultures. Among the diseases of rape are alternaria, fusarium, sclerotinia, powdery mildew, fomoz, perinospora, bacteriosis, etc., which cause a shortage of yield from 15 to 70%. Varieties of rape for resistance to alternaria, perinospora, and fusarium were appreciated at the All-Russian Scientific Research Institute of Rapeseed from 2016 to 2018. The most samples of Brassica napus were affected by alternaria in mild and moderate degrees. The degree of damage by perinospora depended on weather conditions and ranged from a very weak level to an average one. The degree of damage by fusarium was from single to weak and it was connected with many years of the research work. Thus, we could isolate samples, weakly susceptible to alternaria; samples, weakly susceptible to perinospora; samples, weakly affected by fusarium.

scholarly journals Towards breeding of rapeseed (Brassica napus) with alien cytoplasm and powdery mildew resistance from Ethiopian mustard (Brassica carinata)

2020 ◽  
Vol 70 (3) ◽  
pp. 387-395
Author(s):  
Qiong Gong ◽  
Chun-Yan Dai ◽  
Xiao-Han Zhang ◽  
Xiao-Li Wang ◽  
Zhen Huang ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Powdery Mildew ◽  
Powdery Mildew Resistance ◽  
Brassica Carinata ◽  
Mildew Resistance ◽  
Ethiopian Mustard ◽  
Alien Cytoplasm

Identification of the powdery mildew caused by Erysiphe cruciferarum on Brassica napus in Russia

2021 ◽  
Author(s):  
Elena Mikhaylova ◽  
Michael Shein ◽  
Valentin Alexeev ◽  
Anna Sukhareva ◽  
Maria Panfilova
Keyword(s):  
Brassica Napus ◽  
Powdery Mildew ◽  
Erysiphe Cruciferarum

scholarly journals Systemic Resistance to Powdery Mildew in Brassica napus (AACC) and Raphanus alboglabra (RRCC) by Trichoderma harzianum TH12

PLoS ONE ◽  
2015 ◽  
Vol 10 (11) ◽  
pp. e0142177 ◽  
Author(s):  
Jawadayn Talib Alkooranee ◽  
Yongtai Yin ◽  
Tamarah Raad Aledan ◽  
Yingfen Jiang ◽  
Guangyuan Lu ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Powdery Mildew ◽  
Trichoderma Harzianum ◽  
Systemic Resistance

Microscopy studies of powdery mildew on summer squash

1991 ◽  
Vol 49 ◽  
pp. 520-521
Author(s):  
John S. Gardner ◽  
W. M. Hess
Keyword(s):  
Powdery Mildew ◽  
Tip Growth ◽  
Hyphal Growth ◽  
Plant Tissues ◽  
Vegetative Hypha ◽  
Powdery Mildews ◽  
Summer Squash ◽  
Conidial Formation ◽  
Polar Tip Growth ◽  
Short Conidiophore

Powdery mildews are characterized by the appearance of spots or patches of a white to grayish, powdery, mildewy growth on plant tissues, entire leaves or other organs. Ervsiphe cichoracearum, the powdery mildew of cucurbits is among the most serious parasites, and the most common. The conidia are formed similar to the process described for Ervsiphe graminis by Cole and Samson. Theconidial chains mature basipetally from a short, conidiophore mother-cell at the base of the fertile hypha which arises holoblastically from the conidiophore. During early development it probably elongates by polar-tip growth like a vegetative hypha. A septum forms just above the conidiophore apex. Additional septa develop in acropetal succession. However, the conidia of E. cichoracearum are more doliform than condia from E. graminis. The purpose of these investigations was to use scanning electron microscopy (SEM) to demonstrate the nature of hyphal growth and conidial formation of E. cichoracearum on field-grown squash leaves.

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