caa a22 4500 386375097 CHVBK 20180307112015.0 cr unu---uuuuu 161130e198902 xx s 000 0 eng 10.1017/S1742758400003295 doi S1742758400003295 pii (NATIONALLICENCE)cambridge-10.1017/S1742758400003295 Varietal resistance in sorghum to spotted stem borer, Chilo partellus (Swinhoe) [Elektronische Daten] The spotted stem borer, Chilo partellus (Swinhoe) is an economically important pest in many sorghum growing areas of Asia and Africa. A chronological progress made in Indian and other programmes on natural and artificial screening techniques is reviewed. Numerous germpiasm accessions were evaluated and resistant sources identified and documented for various parameters of resistance such as foliar damage, "dead hearts” and stem tunnelling. Studies on the mechanisms of resistance showed predominance of tolerance, variable degrees of antibiosis and antixenosis as only a factor for oviposition. The morphological characters and biochemical factors associated with resistance are discussed. The nature of resistance is polygenic and partially dominant over susceptibility. The inheritance patterns of resistance to foliar damage and/or "dead hearts”, and stem (stalk and peduncle) tunnelling damage are different and independent. Pedigree breeding with single and multiple crosses has been useful to transfer resistance in more economic background. Continuous screening for stem tunnelling over several generations improves the level of resistance. Recurrent selection was suggested alternatively with and without infestation for resistance and yield, respectively to increase the level of tolerance. The resistant sources utilized in developing commercially released high yielding varieties, hybrids and derivatives with low to moderate levels of resistance are listed. Efforts to develop cultivars with levels of resistance higher than presently grown cultivars and combining cross resistance to stem borers and shootfly are under way. Current progress has been reviewed and future strategies are suggested. Copyright © ICIPE 1989 Antibiosis nationallicence antixenosis nationallicence breeding nationallicence Chilo partellus nationallicence cross resistance nationallicence genetics nationallicence inheritance nationallicence mechanisms of resistance nationallicence nonpreference nationallicence recovery resistance nationallicence stem borer nationallicence screening techniques nationallicence sorghum nationallicence sources nationallicence stability nationallicence tolerance nationallicence varietal resistance nationallicence Antibiose nationallicence antixénos nationallicence séléction nationallicence Chilo partellus nationallicence cross résistance nationallicence génétique nationallicence heritabilité nationallicence mécanismes de résistance nationallicence nonpreference nationallicence recovery résistance nationallicence rongeur de tige nationallicence téchniques de criblage nationallicence sorgo nationallicence sourcés nationallicence l'stabilité nationallicence tolérance nationallicence varieté résistance nationallicence Singh B. U. All India Coordinated Sorghum Improvement Project, National Research Centre for Sorghum, Rajendranagar, Hyderabad 500 030 (AP), India Rana B. S. All India Coordinated Sorghum Improvement Project, National Research Centre for Sorghum, Rajendranagar, Hyderabad 500 030 (AP), India International Journal of Tropical Insect Science Cambridge University Press 10/1(1989-02), 3-27 1742-7584 10:1<3 1989 10 JTI https://doi.org/10.1017/S1742758400003295 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S1742758400003295 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Singh B. U. All India Coordinated Sorghum Improvement Project, National Research Centre for Sorghum, Rajendranagar, Hyderabad 500 030 (AP), India NATIONALLICENCE 700 1- Rana B. S. All India Coordinated Sorghum Improvement Project, National Research Centre for Sorghum, Rajendranagar, Hyderabad 500 030 (AP), India NATIONALLICENCE 773 0- International Journal of Tropical Insect Science Cambridge University Press 10/1(1989-02), 3-27 1742-7584 10:1<3 1989 10 JTI CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge