Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/14280
Title: Impact of transgenic cotton varieties on activity of enzymes in their rhizosphere
Authors: Mina, Usha
Anita Chaudhary, Anita
Keywords: <i style="mso-bidi-font-style:normal"><span style="font-size:9.0pt;font-family:"Times New Roman";mso-fareast-font-family: "Times New Roman";mso-ansi-language:EN-GB;mso-fareast-language:EN-US; mso-bidi-language:AR-SA" lang="EN-GB">Bt-</span></i><span style="font-size:9.0pt; font-family:"Times New Roman";mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language:AR-SA" lang="EN-GB">Cotton</span>
Dehydrogenase
Urease
Phosphatase
Soil enzymes
Growth stage
Issue Date: Jun-2012
Publisher: NISCAIR-CSIR, India
Abstract: <span style="font-size:11.0pt;mso-bidi-font-size: 10.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-gb;mso-fareast-language:en-us;mso-bidi-language:ar-sa;="" mso-bidi-font-weight:bold"="" lang="EN-GB">The imp<span style="font-size: 11.0pt;mso-bidi-font-size:10.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:="" "times="" roman";mso-ansi-language:en-gb;mso-fareast-language:en-us;="" mso-bidi-language:ar-sa"="" lang="EN-GB">act of five <i style="mso-bidi-font-style:normal">Bacillus thuringiensis</i> (<i>Bt</i>) cotton varieties and their respective isogenic non-<i><span style="font-size:11.0pt;mso-bidi-font-size:10.0pt;font-family:" times="" new="" roman";="" mso-fareast-font-family:"times="" roman";mso-ansi-language:en-gb;mso-fareast-language:="" en-us;mso-bidi-language:hi"="" lang="EN-GB">Bt</span></i><span style="font-size: 11.0pt;mso-bidi-font-size:10.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:="" "times="" roman";mso-ansi-language:en-gb;mso-fareast-language:en-us;="" mso-bidi-language:ar-sa"="" lang="EN-GB">(NBt)<i><span style="font-size:10.0pt; font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-gb;mso-fareast-language:en-us;mso-bidi-language:hi"="" lang="EN-GB"> </span></i><span style="font-size:11.0pt;mso-bidi-font-size:10.0pt;font-family:" times="" new="" roman";="" mso-fareast-font-family:"times="" roman";mso-ansi-language:en-gb;mso-fareast-language:="" en-us;mso-bidi-language:ar-sa"="" lang="EN-GB">isolines (<span style="mso-bidi-font-weight: bold">ANKUR-2534, MECH-6304, RCH-317, ANKUR-651 and MECH-6301) was assessed on the key soil enzymes i.e., dehydrogenase, alkaline phosphatase and urease <span style="mso-bidi-font-weight:bold">in their rhizosphere at four growth stages of the crop, namely vegetative, flowering, bolling and harvesting<span style="mso-bidi-font-weight:bold">. These varieties were grown on farmer’s field in villages 22 miles and 24 miles of Ganganagar District of Rajasthan State in India. Results showed that dehydrogenase, alkaline phosphatase and urease activities were higher in rhizosphere of <i>Bt</i> isolines as compared to NBt isolines of all the varieties. Except phosphatase, differences in dehydrogenase and urease activities in rhizosphere of <i>Bt</i> and NBt isolines of all five varieties were significant<i><span style="font-size:10.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:="" "times="" roman";color:#131313;mso-ansi-language:en-gb;mso-fareast-language:="" en-us;mso-bidi-language:hi"="" lang="EN-GB"> </span></i><span style="font-size:10.0pt; font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#131313;mso-ansi-language:en-gb;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-GB">(P&lt;0<i>.</i>05)<span style="font-size:11.0pt; mso-bidi-font-size:10.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:="" "times="" roman";mso-ansi-language:en-gb;mso-fareast-language:en-us;="" mso-bidi-language:ar-sa"="" lang="EN-GB">. Maximum enhancement in the three enzymes activities was observed in <span style="mso-bidi-font-weight:bold">MECH-6304 <i>Bt</i> isoline rhizosphere. Maximum and minimum activities of dehydrogenase and urease were observed in <span style="mso-bidi-font-weight:bold">MECH-6304 and <span style="mso-bidi-font-weight:bold">RCH-317 <i>Bt</i> isolines, respectively, whereas phosphatase activity was maximum and minimum in <span style="mso-bidi-font-weight:bold">MECH-6304 and <span style="mso-bidi-font-weight: bold">ANKUR-651 <i>Bt</i> isolines, respectively. Maximum dehydrogenase and urease activities were observed at boll formation and minimum at flowering and harvesting stage, respectively, while maximum phosphatase activity was observed at vegetative stage and minimum at harvesting stage. In conclusion, all the studied <i>Bt</i> isolines of cotton varieties showed no adverse effect on dehydrogenase, alkaline phosphatase and urease activities in the rhizosphere. </span></span></span></span></span></span></span></span></span></span></span></span></span></span>
Description: 195-201
URI: http://hdl.handle.net/123456789/14280
ISSN: 0975-0959 (Online); 0301-1208 (Print)
Appears in Collections:IJBB Vol.49(3) [June 2012]

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