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Genotypic effects of sorghum accessions on fecundity of sorghum head bug, Calocoris angustatus Lethiery

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Relation http://oar.icrisat.org/2098/
http://dx.doi.org/10.1007/BF00023080
 
Title Genotypic effects of sorghum accessions on fecundity of sorghum head bug, Calocoris angustatus Lethiery
 
Creator Sharma, H C
Lopez, V F
Nwanze, K F
 
Subject Sorghum
 
Description Sorghum head bug (Calocoris angustatus Leth.) (Hemiptera: Miridae) is an important pest of grain sorghum in India. We studied the fecundity of head bug females reared for one to three generations on head bug-resistant and head bug-susceptible genotypes during the 1988 and 1989 rainy and 1988–89 post-rainy seasons. Head bug population increase was lower for the first, second and/or third generation when the bugs were reared on IS 2761, IS 19955, IS 14334, IS 23748, IS 16357, IS 17610, and IS 21444 compared with the susceptible controls CSH 1, CSH 5, and CSH 9. These genotypes also suffered a low grain damage (damage rating (DR) le5) (except IS 2761) compared with the susceptible controls (DR>6). A marginal decrease in fecundity was observed when the bugs were reared on IS 2761, IS 14334, IS 16357, IS 20740 and IS 17610 and then transferred to the susceptible control, CSH 1. Sorghum genotypes having lower increase in bug population across generations, suffering low grain damage, and showing adverse effects on fecundity can be used in breeding for resistance to head bugs.
 
Publisher Springer
 
Date 1993
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/2098/1/Genotypic_effects_of_sorghum_accessions_on_fecundity_of_sorghum_head_bug%2C_Calocoris_angustatus_Lethiery.pdf
Sharma, H C and Lopez, V F and Nwanze, K F (1993) Genotypic effects of sorghum accessions on fecundity of sorghum head bug, Calocoris angustatus Lethiery. Euphytica, 65 (3). pp. 167-175. ISSN 0014-2336