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Managing maize pollen dispersal and ...

Astini, Juan Pablo.

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Managing maize pollen dispersal and out-crossing.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Managing maize pollen dispersal and out-crossing./
Author:	Astini, Juan Pablo.
Description:	161 p.
Notes:	Adviser: Mark E. Westgate.
Contained By:	Masters Abstracts International45-05.
Subject:	Agriculture, Agronomy. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1443064

Managing maize pollen dispersal and out-crossing.
Astini, Juan Pablo.

Managing maize pollen dispersal and out-crossing. - 161 p.

Adviser: Mark E. Westgate.

Thesis (M.S.)--Iowa State University, 2007.

Concerns about controlling pollen flow in maize ( Zea mays L.) have greatly increased since the introduction of transgenes for insect resistance, herbicide resistance, and production of pharmaceutical and industrial compounds. The primary concern is related to out-crossing with non-transgenic genotypes destined for food uses or organic production. Pollen control is necessary to prevent the introduction of transgenes into sexually compatible crops or wild relatives in locations where these are grown or occur naturally (e.g., Native maize genotypes in Mexico).Subjects--Topical Terms:

1018679
Agriculture, Agronomy.

Managing maize pollen dispersal and out-crossing.
LDR:02464nam 2200277 a 45 001 949226
005 20110525
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035 $a (UMI)AAI1443064
035 $a AAI1443064
040 $a UMI $c UMI
100 1 $a Astini, Juan Pablo. $3 1272604
245 1 0 $a Managing maize pollen dispersal and out-crossing.
300 $a 161 p.
500 $a Adviser: Mark E. Westgate.
500 $a Source: Masters Abstracts International, Volume: 45-05, page: 2307.
502 $a Thesis (M.S.)--Iowa State University, 2007.
520 $a Concerns about controlling pollen flow in maize ( Zea mays L.) have greatly increased since the introduction of transgenes for insect resistance, herbicide resistance, and production of pharmaceutical and industrial compounds. The primary concern is related to out-crossing with non-transgenic genotypes destined for food uses or organic production. Pollen control is necessary to prevent the introduction of transgenes into sexually compatible crops or wild relatives in locations where these are grown or occur naturally (e.g., Native maize genotypes in Mexico).
520 $a The central hypothesis of this dissertation is that out-crossing resulting from pollen flow in maize is a predictable process, which can be simulated and quantified. The thesis is organized into three chapters. Chapter 2 describes a field study to test how a natural vegetative wind barrier might be used to limit pollen dispersal. In 10 independent tests, diminishing wind speed across the maize canopy resulted in a smaller pattern of pollen dispersal in the surrounding field. Chapter 3 presents the first attempt to predict out-crossing in a commercial hybrid seed production field. The analysis demonstrates that out-crossing can be predicted accurately based on inbred flowering dynamics and estimates of pollen dispersal. The field study presented in Chapter 4 tests the potential for predicting the spatial pattern of out-crossing from a transgenic pollen source. The results demonstrate the accuracy of the combined kernel set and pollen dispersal models as well as the benefit of surrounding the transgenic source with a non-transgenic maize crop producing abundant pollen.
590 $a School code: 0097.
650 4 $a Agriculture, Agronomy. $3 1018679
650 4 $a Agriculture, Plant Pathology. $3 1028950
690 $a 0285
690 $a 0480
710 2 $a Iowa State University. $3 1017855
773 0 $t Masters Abstracts International $g 45-05.
790 $a 0097
790 1 0 $a Westgate, Mark E., $e advisor
791 $a M.S.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1443064