Scientometric study of the research performed on Gall
midge biotype in India
ABSTRACT
The paper brings out the results of a scientometric studies entitled
"Scientometric study of the research performed on Gall midge biotype in
India" for the period from 2001-2010. The data were downloaded from the
direct searches in the J -Gate plus Database (https://www.jgateplus.com). The
articles were takeout from a 'Rice Gall midge biotype of India' search query.
Various scientometrie indicators have been applied to acquire an appropriate
perception of the growth and present status of research output of Gall midge
biotype in India. This study aims at analysing the research output gall midge
biotype in India. The analysis cover mainly the distribution of publications,
Authorship pattern and their percentage. Single author vs Multi author
contribution, Degree of collaboration, Affiliation of contributors, Geographical
Distribution of Articles, Geographical distribution of Research. Journals and
Publisher wise distribution of Articles.
KEYWORDS
Bibliometrics, Scientometrics, Authorship pattern, Degree of
collaboration, Affiliation of contributors. Institution wise contributors.
Geographical Distribution, Publisher wise distribution, Rice, Biotype, Gall
midge.
INTRODUCTION
The Asian rice gall midge, Orseolia oryzae (Wood-Mason; Diptera:
Cecidomyiidae), is a serious pest of rice in India and other Asian countries. Its
damage in India causes an average annual yield loss of 0.8% of the total
production, amounting to about US$ 80 million (Bentur et al., 2003). Since the
gall midge larvae infest closed galls, chemical control is not very effective.
, Cultivation of resistant varieties is the most effective and economic way to
control this pest, since it is economical, eco-friendly and compatible with
other control measures. Over 60 gall midge-resistant rice varieties have been
developed and released for cultivation in different parts of the India. Genetic
analysis have identiued 10 resistance genes, designated as Gm1 -Gm10,
conferring gall midge resistance in rice (Kumar et al., 2005). Of these, three
genes namely Gm1,Gm2 andunknown gene(s) in the Ptb21 cultivar have been
widely used, most often as a single gene in avariety, in 83% of the released
varieties. Large area cultivation of a single resistant rice variety over a large
area of India resulted in rapid development. Of virulent gall midge biotypes
capable of overcoming host plant resistance.
Gall midge biotype is changed and enabled this insect to overcome host
resistance. Biotypes differ in host range, depending upon the resistance genes
present in the cultivars. A shift in the gall midge population at any given place
may render a previously resistant hostb became susceptible. The appearance
of biotype 4 in Vijaynagram and Srikakulam districts of Andhra Pradesh led to
the susceptibility of all resistant cultivars with the Gm1 and Gm2 resistance
genes, resulting in failure of thousands of hectares of rice. Abhya, a veriety
bred at Indira Gandhi Krishi Vishwavidyalaya, with the Gm 4 resisance gene
was resistant against the new biotype and was immediately released for
cultivation. Therefore lot of work on inheritance study and allelic relationship
have been done in India.
There have been several reports from different parts of the country of
breakdown of resistance invarieties containing the Gml or Gm2 gene
(Benturet al., 1987; Nair and Devi, 1994; Srinivas et al… 1994; DRR, 2004). Six
distinct gall midge biotypes have been identified so far from different parts of
India based on reaction pattern reported against a setof three groups of
differential rice varieties (Benturet al., 2003). Geographical distribution of
these biotypes has been well mapped and is being monitored every year
through the national gallmidge biotype-monitoring studies under the All India
Coordinated Rice Improvement Programme (DRR, 2004).
midge biotype in India
ABSTRACT
The paper brings out the results of a scientometric studies entitled
"Scientometric study of the research performed on Gall midge biotype in
India" for the period from 2001-2010. The data were downloaded from the
direct searches in the J -Gate plus Database (https://www.jgateplus.com). The
articles were takeout from a 'Rice Gall midge biotype of India' search query.
Various scientometrie indicators have been applied to acquire an appropriate
perception of the growth and present status of research output of Gall midge
biotype in India. This study aims at analysing the research output gall midge
biotype in India. The analysis cover mainly the distribution of publications,
Authorship pattern and their percentage. Single author vs Multi author
contribution, Degree of collaboration, Affiliation of contributors, Geographical
Distribution of Articles, Geographical distribution of Research. Journals and
Publisher wise distribution of Articles.
KEYWORDS
Bibliometrics, Scientometrics, Authorship pattern, Degree of
collaboration, Affiliation of contributors. Institution wise contributors.
Geographical Distribution, Publisher wise distribution, Rice, Biotype, Gall
midge.
INTRODUCTION
The Asian rice gall midge, Orseolia oryzae (Wood-Mason; Diptera:
Cecidomyiidae), is a serious pest of rice in India and other Asian countries. Its
damage in India causes an average annual yield loss of 0.8% of the total
production, amounting to about US$ 80 million (Bentur et al., 2003). Since the
gall midge larvae infest closed galls, chemical control is not very effective.
, Cultivation of resistant varieties is the most effective and economic way to
control this pest, since it is economical, eco-friendly and compatible with
other control measures. Over 60 gall midge-resistant rice varieties have been
developed and released for cultivation in different parts of the India. Genetic
analysis have identiued 10 resistance genes, designated as Gm1 -Gm10,
conferring gall midge resistance in rice (Kumar et al., 2005). Of these, three
genes namely Gm1,Gm2 andunknown gene(s) in the Ptb21 cultivar have been
widely used, most often as a single gene in avariety, in 83% of the released
varieties. Large area cultivation of a single resistant rice variety over a large
area of India resulted in rapid development. Of virulent gall midge biotypes
capable of overcoming host plant resistance.
Gall midge biotype is changed and enabled this insect to overcome host
resistance. Biotypes differ in host range, depending upon the resistance genes
present in the cultivars. A shift in the gall midge population at any given place
may render a previously resistant hostb became susceptible. The appearance
of biotype 4 in Vijaynagram and Srikakulam districts of Andhra Pradesh led to
the susceptibility of all resistant cultivars with the Gm1 and Gm2 resistance
genes, resulting in failure of thousands of hectares of rice. Abhya, a veriety
bred at Indira Gandhi Krishi Vishwavidyalaya, with the Gm 4 resisance gene
was resistant against the new biotype and was immediately released for
cultivation. Therefore lot of work on inheritance study and allelic relationship
have been done in India.
There have been several reports from different parts of the country of
breakdown of resistance invarieties containing the Gml or Gm2 gene
(Benturet al., 1987; Nair and Devi, 1994; Srinivas et al… 1994; DRR, 2004). Six
distinct gall midge biotypes have been identified so far from different parts of
India based on reaction pattern reported against a setof three groups of
differential rice varieties (Benturet al., 2003). Geographical distribution of
these biotypes has been well mapped and is being monitored every year
through the national gallmidge biotype-monitoring studies under the All India
Coordinated Rice Improvement Programme (DRR, 2004).
