Peer Reviewed Quarterly

Journal's Citation Indices since 2012 : Total Citations 1510,  h-Index 16,  h5- Index 16,  i10- Index 37,  h5-median 13;   Citation Rate:156/year; Watch:-Flora EduPower►

  • HortFlora Research Spectrum
  • HortFlora Research Spectrum
  • HortFlora Research Spectrum
  • HortFlora Research Spectrum
  • HortFlora Research Spectrum
Journal : HortFlora Research Spectrum
Volume : Volume 1, Issue 4: October-December 2012
Page (s) : 306-311
Date of Publication
Print :
Article Type : Full Length Original Article
Online : 16-Nov-2012
Studies on the Extent of Genetic Contamination in Seed Production of Exerted Stigma Tomato (Solanum lycopersicum L.)
Rajinder Singh*, Dilbagh Singh and J.S. Kanwar
*Corresponding Author's E-mail :


Studies were conducted at the experimental farm of Punjab Agricultural University, Ludhiana, during Rabi season for three years, 2006 to 2010 to standardize the minimum isolation distance required for maintaining genetic purity in hybrid seed production of exerted stigma (recessive) tomato under open field conditions. The exerted stigma seed parent with recessive potato leaved seed ling marker was sown at 25 m, 50 m, 75 m, 100m, 150m, 200m and 250m distance away from nor mal stigma (inserted) contaminator parent cv. Castle Rock having dominant cut leaf seed ling marker. The pooled data of three years indicated that the highest percentage of genetic contamination of 9.26% was recorded at a distance of 25 m from the contaminator (Castle Rock). It was also ob served that there was a gradual reduction in contamination level with increasing distance at 100m isolation distance of 2.56% a though it was not within the prescribed maximum permissible limit of genetic contamination (1 and 2% for foundation and certified seed, respectively). There was zero genetic contamination at the highest isolation distance of 150 m. In the present study, in the isolation distances studied until 100m, the level of contamination was well above the permissible minimum seed certification standards (98 % genetic purity for certified seed). However, based on the present study, the isolation distance required for maintenance of genetic purity of tomato using exerted stigma seed parent for hybrid seed production under open field conditions of Punjab is 150m as against the recommended isolation of 25m and 100m for production of certified seeds of open pollinated seeds and hybrid seeds, respectively.
abortion opinions abortion at 6 weeks average cost of an abortion
my boyfriend cheated on me with my mom open wifes that cheat
abortion help hysteroscopy dilation and curettage abortion statistics
early abortion terminating pregnancy information on abortion
viagra pill ventolin 4mg levofloxacin 750mg

Cite this article as:
Singh R., Singh D. and Kanwar J. S. (2012). Studies on the extent of genetic contamination in seed production of  exerted stigma tomato (Solanum lycopersicum L.). HortFlora Res. Spectrum, 1 (4):306-311
aids and hiv symptoms symptoms of hiv hiv and aids pictures
what are symptoms of hiv/aids treatment for aids treatment of hiv and aids
how women cheat online affair
cheaters why women cheat on their husband why do married men cheat
walgreens coupon code photos walgreens weekly deals
Read/Download Full text PDF
*Registration required (Free)