Sheath Rot Disease of Rice

by Rao, K. Manibhushan

ISBN: 9789354618987
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Imprint : Daya Publishing House
Year : 2024
Price : Rs. 3095.00
Biblio : xvi+71p., figs., tabls, colour & B and W plates, bib., ind., 25 cm

About The Book

Sheath rot (ShR) has been known almost for a century, but was restricted to South East Asia and the Indian Subcontinent. Occurrence of the disease became widespread in mid 1970s when the high yielding technology was introduced by planting improved N-responsive cultivars. Today, ShR is a major constraint in rice production in irrigated as well as rainfed, upland rice. The disease has been reported in many rice growing countries and its spread causes concern because of its transmission and dissemination. The causal fungi, Sarocladium spp, have biological association with rice tungro virus, mites, stem-borers and mealy bugs and therefore increases the ShR incidence as well as severe yield losses. Scant information is available on the biology of the causal organism both in vitro and in vivo. Although a few tall cvs have been identified as resistant, almost all the high-yielding, improved cvs are susceptible to ShR. Biology of the ShR pathogens, host range, varietal resistance and future perspectives were discussed and the importance for a holistic approach to disease control was emphasized.

Table of Contents

Contents Chapter 1: History and distribution; Chapter 2: Symptomatology; Chapter 3: Disease Development; Disease incidence; Chapter 4: Disease Severity and Yield Loss; Linear and multiple regression analysis (MRA), Factors affecting yield loss; Chapter 5: Causal Organism; Nomenclature, Taxonomy, Type species, Morphology, Species concept, Light microscopic studies, SEM studies, Physiology, Carbon and nitrogen utilization, Sporulation, Toxins, Enzymes, Biochemical constituents, Mycelial constituents; Protein profile, Serological relationship, Crossed immunoeletrophoresis; Chapter 6: Pathogenicity; Mode of infection, Viruleuce of the isolates; Chapter 7: Host Range; Chapter 8: Disease Cycle; Chapter 9: Varietal Resistance; Method of inoculation, Method of scoring; Chapter 10: Host-Pathogen Interaction; N-fertilization, Phenol metabolism, PO/PPO, Plant hormones, Interaction with other stem attacking rice pathogens; Chapter 11: Disease Resistance; Induced resistance, Phytoalexins; Chapter 12: Disease Control; Breeding for disease resistance, Chemical control, Biological control, Antagonists, Soil amendments, Biofertilizers, Remedial measures; Chapter 13: Future Perspectives; Preamble, Host-pathogen interaction at molecular level, Induced host resistance, Biocontrol strategies.