Abstract
BACKGROUNDGarlic is the second largest allium crop after onion and is grown all over the world. The onion maggot (Delia antiqua M.) is a pest that seriously affects the yield and quality of garlic. Cultural controls and insecticides have several potential problems, including pesticide residue and development of resistance. Screening resistant varieties is an ideal alternative method.RESULTSThe resistance of 213 accessions of garlic clones against onion maggot was identified. The results showed that the pest index was between 5.56% and 91.11%, with classification into six groups by cluster analysis: HR (highly resistant), R (resistant), MR (moderately resistant), MS (moderately susceptible), S (susceptible) and HS (highly susceptible). Among these accessions, 9 and 30 were HR and R to onion maggot, respectively. Comparing the resistances of seven pairs of accessions between the original accessions and their progenies showed that single bulb clonal selection could be an effective way to improve allicin content, onion maggot resistance and most morphological traits. The relationship between allicin content and resistance was investigated, and a significant positive relationship was found. Accessions with a high content of allicin have great potential as resistant accessions.CONCLUSIONThis study showed significant differences among garlic germplasm in their response to Delia antiqua M. Some accessions were highly resistant and tolerant. Utilization of these accessions will help minimize environmental pollution, preserve agro‐ecosystems and biodiversity, and make management processes more economical. Furthermore, these accessions could be used in breeding programs to develop new maggot‐resistant onion cultivars. © 2019 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Highlights
Garlic (Allium sativum L.) has been cultivated for more than 5000 years and is presumed to have originated in central Asia,[1] subsequently spreading west, south and east.[2]
There was wide variation in the resistance of the garlic germplasm to onion maggot (Delia antiqua M.), with pest index values ranging from 5.56% to 91.11% (Table S1)
The accuracy of the allicin detect methods was confirm by 40 accessions of garlic
Summary
Garlic (Allium sativum L.) has been cultivated for more than 5000 years and is presumed to have originated in central Asia,[1] subsequently spreading west, south and east.[2]. Garlic is an important commercial crop that is widely grown around the world, especially in Asia and North Africa; China is the largest global producer, providing 80% of total world production, and the leading exporter.[3–7]. Following China, other significant garlic producers include India (5% of world production) and Bangladesh (1%). Vegetative propagation results in additional diseases and pest problems throughout garlic developmental stages, causing considerable losses in yield. In addition to yield reductions, diseases and insect pests are harmful to bulbs during harvesting, post-harvest processing and marketing, lowering the quality of garlic and resulting in significant economic losses.[9,10]. Garlic is the second largest allium crop after onion and is grown all over the world. The onion maggot (Delia antiqua M.) is a pest that seriously affects the yield and quality of garlic.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
