Leaf folding behaviour of Cnaphalocrocis medinalis (Guenee) and Marasmia patnalis Bradley, and the influence of rice leaf morphology on damage incidence

Islam, Zahirul; Karim, A. N. M. R.

doi:10.1016/s0261-2194(96)00101-9

Cited by 29 publications

(22 citation statements)

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“…Previous studies have also reported the positive correlation between damaged leaves with length and width of the flag leaf as RLF prefers the broad, greenish and long flag leaves than the narrow and smaller leaves due to their tough mid rib (Islam and Karim 1997;Chalapathirao et al 2002).…”

Section: Discussionmentioning

confidence: 87%

Detection of quantitative trait locus for leaffolder (Cnaphalocrocis medinalis (Guenée)) resistance in rice on linkage group 1 based on damage score and flag leaf width

et al. 2007

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Rice leaffolder (RLF) (Cnaphalocrocis medinalis (Guené e) is a destructive and widespread insect pest throughout the rice growing regions in Asia. The genetics of resistance to RLF in rice is very complex and not thoroughly explored. The present study was conducted to detect the quantitative trait loci (QTL) associated with RLF resistance involving 176 recombinant inbred lines (RILs) of F 8 generation derived from a cross between IR36, a leaffolder susceptible variety and TNAULFR831311, a moderately resistant indica rice culture. Simple sequence repeat (SSR) markers were used to construct specific linkage groups of rice. All the RILs were screened to assess their level of resistance to RLF by measuring the leaf area damaged. Besides this, the length and width of the flag leaf of each RIL were measured since these two parameters were considered as correlated traits to the RLF resistance in rice. All the above parameters observed across the RILs showed quantitative variation.Correlation analysis revealed that damage score based on greenhouse screening was positively correlated with length and width of the flag leaf. Out of 364 SSR markers analysed, 90 were polymorphic between the parents. Multi-point analysis carried out on segregating 69 SSR marker loci linkage group wise resulted in construction of linkage map with eleven groups of 42 SSR markers. Through single marker analysis, 19 SSR markers were found to have putative association with the three phenotypic traits studied. Of these markers, RM472 was identified as a locus having major effect on RLF resistance trait based on length of the flag leaf. Interval mapping detected two QTLs on linkage group 1. Among these QTLs, the QTL flanked by RM576-RM3412 were found to be associated with width of the flag leaf and RLF resistance. The putative SSR markers associated with leaffolder resistance identified in the present study may be one of the loci contributing resistance to RLF in rice.

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Section: Discussionmentioning

confidence: 87%

Detection of quantitative trait locus for leaffolder (Cnaphalocrocis medinalis (Guenée)) resistance in rice on linkage group 1 based on damage score and flag leaf width

et al. 2007

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“…Although screening of rice germplasm collections has identiÞed cultivars and wild species with resistance to pyralid leaffolders, no rice varieties with high levels of resistance to these insects have been released (Pathak and Khan 1994). Among the traits that have been found to contribute to resistance to leaffolders in rice are leaf morphology (Islam and Karim 1997) and silica content (Ramachandran and Khan 1991). Varieties with narrow leaves are apparently more resistant because it is more difÞcult for leaffolders to fold the leaves and form the protective compartment in which they feed (Islam and Karim 1997).…”

Section: Discussionmentioning

confidence: 99%

“…Among the traits that have been found to contribute to resistance to leaffolders in rice are leaf morphology (Islam and Karim 1997) and silica content (Ramachandran and Khan 1991). Varieties with narrow leaves are apparently more resistant because it is more difÞcult for leaffolders to fold the leaves and form the protective compartment in which they feed (Islam and Karim 1997). In group D1, in which the hybrid IR64616H was more resistant than its parental lines, leaf width did not differ signiÞcantly among the four lines at 1, 8, or 15 d after infestation (C.C.B., unpublished data).…”

Section: Discussionmentioning

confidence: 99%

Do Rice Hybrids Have Heterosis for Insect Resistance? A Study with <I>Nilaparvata lugens</I> (Hemiptera: Delphacidae) and <I>Marasmia patnalis</I> (Lepidoptera: Pyralidae)

Cohen¹,

Bernal²,

Virmani³

2003

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Antibiosis-based resistance to two insect pests of rice, Nilaparvata lugens (Stål) (Hemiptera: Delphacidae) and Marasmia patnalis Bradley (Lepidoptera: Pyralidae), was compared in 11 F1 hybrids and their parental lines. Our objective was to determine whether hybrids show heterosis (hybrid vigor) for insect resistance or susceptibility. Heterosis is defined as the amount by which a hybrid exceeds its midparent value or its better parent. Overall, we did not find evidence of heterosis or heterobeltiosis (a type of heterosis in which a hybrid exceeds its better parent) for antibiosis-based resistance or susceptibility to either of the insects. One hybrid, IR64616H, seemed more resistant to M. patnalis than its better parent but none of the other hybrids showed heterobeltiosis for resistance or susceptibility to either insect. Three hybrids had resistance to N. lugens that exceeded their midparent value, possibly due to dominant resistance in one of the parents. The increased frequency and severity of insect outbreaks on hybrid rice that have been reported in China may be attributable to factors other than diminished antibiosis in hybrids, such as greater attractiveness of hybrids to migrating or dispersing insects or differences in agronomic practices applied to hybrids and inbred rice cultivars.

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“…It is widely distributed in China, Japan, Korea, India, Vietnam, Thailand, the Philippines, Malaysia and other Asian countries . The larvae feed on rice leaves by folding and scraping the leaf surfaces, which may result in reduced photosynthesis and yields . In the 1960s, the rice leaffolder was a minor pest in China, and has gradually become a major pest in recent years, probably as a consequence of the cultivation of susceptible high‐yielding varieties and high applications of nitrogen fertilizers and pesticides .…”

Section: Introductionmentioning

confidence: 99%

“…Such behaviors result in a reduction of photosynthesis of the folded leaves . The third‐ to fifth‐instar larvae usually fold the leaves longitudinally with the abaxial surface inside the folds, while younger larvae usually only roll the leaf edges . The folding and spinning behavior of the rice leaffolder could also be influenced by the genotypes of rice varieties and rice leaf morphology , .…”

Section: Introductionmentioning

confidence: 99%

Sublethal effects of four insecticides on folding and spinning behavior in the rice leaffolder, Cnaphalocrocis medinalis (Guenée) (Lepidoptera: Pyralidae)

Yang

Wang

et al. 2017

Pest Management Science

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Leaf folding behaviour of Cnaphalocrocis medinalis (Guenee) and Marasmia patnalis Bradley, and the influence of rice leaf morphology on damage incidence

Cited by 29 publications

References 1 publication

Detection of quantitative trait locus for leaffolder (Cnaphalocrocis medinalis (Guenée)) resistance in rice on linkage group 1 based on damage score and flag leaf width

Detection of quantitative trait locus for leaffolder (Cnaphalocrocis medinalis (Guenée)) resistance in rice on linkage group 1 based on damage score and flag leaf width

Do Rice Hybrids Have Heterosis for Insect Resistance? A Study with <I>Nilaparvata lugens</I> (Hemiptera: Delphacidae) and <I>Marasmia patnalis</I> (Lepidoptera: Pyralidae)

Sublethal effects of four insecticides on folding and spinning behavior in the rice leaffolder, Cnaphalocrocis medinalis (Guenée) (Lepidoptera: Pyralidae)

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