Evaluation of paddy genotypes against brown planthopper, Nilaparvata lugens (Stal.) and whitebacked planthopper, Sogotella furcifera (Horvath) under field condition (original) (raw)
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Journal of entomology and zoology studies, 2019
Brown plant hopper, Nilaparvata lugens (Stal.), one of the major insect pest in paddy has developed resistance against the majority of insecticides which has created a new challenge for its management. Growing of BPH resistant varieties is an economical, environmentally safe and effective strategy to manage this pest. In the present study, 105 Plant Hopper Screening (PHS) and 25 Multiple Resistant Screening Trial (MRST) of rice genotypes were screened in the glasshouse conditions along with resistant (PTB-33) and susceptible checks Taichung Native-1(TN1). The standard seedbox screening method was used for the bulk screening of entries. The rating scale and level of resistance were adopted from the standard evaluation system for rice but the ranges for percent dead seedling were constructed to facilitate the rating based on percent seedling mortality due to BPH damage. According to observations, entries RP 2068-18-3-5, RP 6121Bphk17-2, IR 73382-80-9-3-13-2-2-1-3-B (HWR-16), IR 77390-...
Evaluation of rice genotypes for brown planthopper resistance
Journal of Agriculture and Value Addition, 2020
Brown planthopper (Nilaparvata lugens) (BPH) is a major pest of rice in Sri Lanka. Identification of new resistance sources has immense important in varietal improvement programme. Therefore, twenty-five rice genotypes including new improved, exotic and traditional varieties were evaluated for BPH resistance using standard seed box screening technique and honeydew test to identify resistant varieties. During screening Ptb 33 was used as resistant variety. TN1 and Bg 380 were used as susceptible varieties. Bg 380 showed highly susceptible reaction. Ptb 33 had the highest level of BPH resistance with lowest damage score of 3.0. Bg 300, Bg 352, Bg 379-2, Bg 450 and Bw 367 which are popular varieties recorded damage score of 4.7 to 5.6 which categorized as moderately resistant reactions. Similarly, two exotic lines, IR 65482-7-216-2 and IR 71033-121-15 showed moderately resistant reaction too. Among the traditional rice cultivars, Mudukiri el, Horana ma wee, Hondarawala and Mada el showed resistant to moderately resistant reactions. According to the present study, Bg 379-2 and IR 71033-121-15 were the better donor parents for BPH resistance since those varieties having good plant architecture and yield.
Screening of rice genotypes for resistance to the brown planthopper, Nilaparvata lugens Stål
Cereal Research Communications, 2012
In order to breed rice cultivars for resistance to the brown planthopper, Nilaparvata lugens Stål (BPH) in Bangladesh, were evaluated for resistance in greenhouse screening tests. Over a period of six years (2005-2010), 1,767 entries/cultivars were screened using the plant hopper screening (PHS) system. The results showed 87 donors possessing different levels of resistance to the BPH. One exotic cultivar was highly resistant to the BPH and 86 materials showed medium resistance (tolerance) to the BPH. The rest of the materials including germplasm, F 2, exotic, IRBPHN (International Rice Brown Planthopper Nursery) and advanced lines were susceptible. Most of entries coming from the International Rice Research Institute (IRRI) via the IRBPHN were moderately resistant.
Screening of Rice Genotypes for Resistance to the Brown Planthopper, Nilaparvata lugens Stål
Cereal Research Communications
In order to breed rice cultivars for resistance to the brown planthopper, Nilaparvata lugens Stål (BPH) in Bangladesh, were evaluated for resistance in greenhouse screening tests. Over a period of six years (2005-2010), 1,767 entries/cultivars were screened using the plant hopper screening (PHS) system. The results showed 87 donors possessing different levels of resistance to the BPH. One exotic cultivar was highly resistant to the BPH and 86 materials showed medium resistance (tolerance) to the BPH. The rest of the materials including germplasm, F 2, exotic, IRBPHN (International Rice Brown Planthopper Nursery) and advanced lines were susceptible. Most of entries coming from the International Rice Research Institute (IRRI) via the IRBPHN were moderately resistant.
International Journal of Current Microbiology and Applied Sciences
Studies were undertaken to evaluate the rice genotypes of Sikkim and Tripura for their resistance against brown planthopper (BPH) under glasshouse conditions. Among 74 rice genotypes phenotyped, a genotype (AC-39843) was considered as resistant and two other genotype (AC-39842 and AC-39877) of Tripura were categorized as moderately resistant to BPH. To understand their mechanism of resistance, resistant genotypes were evaluated for different parameter of antixenosis and antibiosis. The antixenosis and antibiosis studies in terms of nymphal setting preference, per cent unhatchability of eggs, nymphal survival and development, honeydew excretion, probing mark test, plant dry weight loss and defence enzymes (Peroxidase, polyphenol oxidaseand catalase) indicated that these genotypes showed confirmation of resistance to BPH compared to susceptible check TN 1. Among resistant genotypes, AC-39843 recorded lowest sugar content followed by AC-39842 and AC-39877 compared to TN1. Total phenol content in AC-39843 was highest followed by AC-39877 and AC-39842. Resistant genotypes found in the study could be used as new resistant donors and utilized in resistance breeding programme against brown planthopper in rice.
Journal of Entomology and Zoology Studies, 2019
Red rice genotypes are characterized by their huge nutritional values. Apart from this property, they also possess valuable sources of resistance to many biotic and abiotic stresses. In the present investigation, a total of 215 red rice accessions collected from north east and other parts of India were screened for their resistance against brown plant hopper (BPH) at National Rice Research Institute (NRRI), Cuttack by following modified screening technique. The results showed, among 215 genotypes, 4 were highly resistant, 11 were resistant and 13 were moderately resistant against BPH. The rest 187 genotypes were either susceptible or highly susceptible. The mechanism of resistance in these identified lines was studied. The nymphal survivility and development was lower in resistant genotypes (Mata Meher 43.33%) after 5day of release as compared to susceptible check TN-1 (100% survivility). Similarly the nymphal developmental period was less in resistant lines than TN-1 (100% nymphs were developed in to adult) after 15 th days of release. The highly resistant genotype Matameher has shown lowest FPLI index (6.75) as compared to resistant(R), moderately resistant (MR) and susceptible (S) reactions.
2021
Brown planthopper (BPH), [Nilaparvata lugens (Stål.)] is an economically important pest of rice (Oryza sativa L.) throughout Asia, where the damage caused by nymphs and adults, especially during post-tillering to milking stages, significantly reduces grain yield. There is, thus, a pressing need to develop varieties that are resistant to BPH. In this study, the reaction of various rice landraces from Indian origin were assessed (both phenotypically and biochemically) in response to BPH infestation. It was found that the landraces, viz. Badshabhog, Gamra, Haldichuri, Janglijata, Kalabhat, Khara, Adanshilpa, Chikonmashuri, Kerala sundari and Lal dudheshwar exhibited resistance to BPH consistently along with the standard check Ptb33, for three consecutive years under both greenhouse and open-field conditions. These phenotypically resistant rice landraces including Ptb33 exhibited lowest feeding rate, least nymphal and adult preference, minimum survival and higher frequency (%) of unhatc...
Rapid screening of rice genotypes for resistance to brown planthopper, Nilaparvata lugens (Stal)
Electronic Journal of Plant Breeding
The brown planthopper (BPH), Nilaparvata lugens (Stal) is still dominating and considered as an important insect in rice and causes considerable yield losses. Host plant resistance is an effective and environment friendly approach to manage the insect pest and screening is a continuous process to identify the resistant sources. With changing climatic conditions and development of biotypes or strains necessitate quicken the process of screening and identification resistant lines time to time. Standard seed box method has been followed for several years and identifying resistant at seedling stage is important process to initiate further identification of resistant factors and development of varieties. In the present study attempts were made to screen the advanced rice entries in protray and standard seed box methods. The reaction of rice entries to BPH in both methods are discussed. The advantage of protray screening and few limitations in the seed box method are described.
Acta Entomology and Zoology, 2021
MO.10) which showed resistant reaction to BPH in previous glasshouse & field screening tests were used in the study. For crossing purpose one susceptible Basmati variety Pusa-1 was also selected as one of the parent. All the resistant entries were taken as mother or female parent, while Pusa-1 served as father or male parent in the present breeding programme. The seed bed screening method was adopted for the evaluation of F1 progenies for brown plant hopper resistance under glass house conditions. F1 progenies of all the seven crosses of rice entries were at par in their resistance reaction against BPH with their resistant female parents under glass house conditions, while F1 progenies of REMYA (MO. 10) × Pusa Basmati 1 and IR 59552-63-2-3 × Pusa Basmati 1 were superior over other progenies in their resistance to brown planthopper.
Relative resistance of paddy varieties to Sitotroga cerealella (Lepidoptera: Gelechiidae)
Biologia, 2010
Relative resistance of paddy varieties to the Angoumois grain moth, Sitotroga cerealella was investigated in the laboratory at a temperature of 28 ± 1.0°C and relative humidity of 65 ± 1.5%. The study was carried out on Indian Agricultural Research Institute (IARI), New Delhi, India varieties and a Taiwan variety. The larvae of S. cerealella were allowed to feed and developed inside the grain while adults did not feed. Results showed that the performance of S. cerealella was least in T (N)-1 (Taichung Native-1), with the longest developmental time (26.3 days) and egg to adult survival of 38% making the variety the most resistant. The performance was best in Pusa 44 with the shortest developmental time (23.0 days) and egg to adult survival of 68.7% making the variety the least resistant. The heaviest females and males with 4.04 g and 2.38 g, respectively, were reared on Pusa sugandh 3, which are large seeds. Moths reared on T (N)-1 had the lowest weights for males and females. Unmate...