caa a22 4500 46792967X CHVBK 20180406152939.0 cr unu---uuuuu 170328e20060701xx s 000 0 eng 10.1007/s10658-006-9017-4 doi (NATIONALLICENCE)springer-10.1007/s10658-006-9017-4 Role of Aeciospores in Outbreaks of Pea ( Pisum sativum ) Rust ( Uromyces fabae ) [Elektronische Daten] [Chanda Kushwaha, Ramesh Chand, Chandra Srivastava] Aeciospores in Uromyces fabae were found to be repeating spores and play an important role in pea rust outbreaks in the North Eastern Plain Zone (NEPZ) of India. Experiments conducted on pea rust from 2001 to 2004 revealed the dominance of aeciospores at all growth stages of pea in this region. Urediospore production was erratic and was only observed in a few samples of stems and tendrils (5-10%). Inoculation of pea plants either by aeciospores or urediospores resulted in the production of aeciospores. Production of aeciospores was observed at a temperature range of 10-25°C, with a maximum at 25 ± 2°C. Among the different growth stages of pea, the pod formation stage was highly susceptible and produced the maximum number (744) of aecidia/leaf at 20-25°C. Significant effects of growth stages and temperature were also noticed for pustule number. Urediospore production mainly coincided with the senescence of the pea plants. Maximum germination (2%) of aeciospores was observed at 25°C, whereas maximum urediospore germination (3.5%) was at 15°C. Temperatures > 15°C decreased urediospore germination. A relative humidity (RH) of 100% was favourable for aeciospore germination while 98% RH favoured urediospore germination. Typical histo-pathological behaviour of the aeciospores was observed. Springer, 2006 aeciospore nationallicence histological studies nationallicence Pisum sativum nationallicence repeating spores nationallicence spore germination nationallicence urediospore nationallicence Kushwaha Chanda Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, 221005, Varanasi, India aut Chand Ramesh Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, 221005, Varanasi, India aut Srivastava Chandra Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, 221005, Varanasi, India aut European Journal of Plant Pathology Kluwer Academic Publishers 115/3(2006-07-01), 323-330 0929-1873 115:3<323 2006 115 10658 https://doi.org/10.1007/s10658-006-9017-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10658-006-9017-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kushwaha Chanda Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, 221005, Varanasi, India aut NATIONALLICENCE 700 1- Chand Ramesh Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, 221005, Varanasi, India aut NATIONALLICENCE 700 1- Srivastava Chandra Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, 221005, Varanasi, India aut NATIONALLICENCE 773 0- European Journal of Plant Pathology Kluwer Academic Publishers 115/3(2006-07-01), 323-330 0929-1873 115:3<323 2006 115 10658 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer