Allelopathic Effects of Sorghum on Milk Thistle (Silybum marianum L.) Seed Germination and Growth
Publish place: Research On Crop Ecophysiology Journal، Vol: 9، Issue: 2
Publish Year: 1393
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_ROCE-9-2_006
تاریخ نمایه سازی: 17 فروردین 1395
Abstract:
Crop residues are well known for their chemical (allelopathic) effects on crops. The allelopathic potential of the aqueous extracts and chopped residual of sorghum (Sorghum bicolor L.) on germination, seedling growth, relative water content, seedling dry weight, seedling length and antioxidant enzyme activitynamely catalase (CAT), peroxidase (POD) and Superoxide Dismutase (SOD) of Silybum marianum was studied. Petri dish and pot experiments were performed in completely randomized design with three replications. Five concentrations of the aqueous extracts and foliar application of the sorghum [control(water distilled), 5, 10, 15 and 20 w/v] and sorghum chopped (0, 5, 10 and 20 g dry chopped / 100 g soil) were used in the experiments carried out in the laboratory and greenhouse, respectively. Petri dish trial showed that the different extract levels reduced total germination percentage (GP), germination rate (GR) and seedling growth. Moreover, relative water content (RWC), dry weight, and seedling length, antioxidantenzyme activity except CAT of milk thistle bioassay were inhibited when growth in soil incorporated with oven-chopped residual of sorghum. The inhibitory effects often depend on the concentration. Finally, sorghum residues had an enormous potential to suppress elements of germination and seedling growth of milk thistle. Hence, this soil incorporation of allelopathic crop residues could be employed as an important agent for crop rotation management
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Authors
HOSSEIN MOKHTARI KARCHEGANI
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz,Iran
SEYEDEH ZAHRA HOSSEINI CICI
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz,Iran
SEYED ABDOLREZA KAZEMEINI
Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz,Iran