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Responce of Some Tanzanian Rice Genotypes Under Salty Soil Conditions: Performance of rice genotypes and evaluation of traits for tolerance under saline and saline-sodic soil conditions - Couverture souple

Kashenge-Killenga, Sophia; Tongoona, Pangirayi; Derera, John

 
9783659260322: Responce of Some Tanzanian Rice Genotypes Under Salty Soil Conditions: Performance of rice genotypes and evaluation of traits for tolerance under saline and saline-sodic soil conditions
Couverture souple
ISBN 10 : 3659260320 ISBN 13 : 9783659260322
Editeur : LAP LAMBERT Academic Publishing, 2012

Synopsis

Many efforts have been made elsewhere to improve cultivated rice varieties for salt-tolerance. In Tanzania, such improvement has never been done though the cultivated land is increasingly dwindling due current environmental changes which increase the effects of salt affected soils in irrigared rice. Most farmers use either improved or local rice varieties regardless of the soil salt status. Varieties grown have never been tested or improved for salt tolerance. Studies found that significant variations in phenology, morphology and physiology across salty environments have also been observed among genotypes. When large differences exist between target environments, a distinct set of genes would be required for specific adaptation . Thus, cultivars selected in non-stressed environments may not necessarily be suited for stress environments. Experience also revealed that, introduction of high yielding varieties from non-stress soils into problem soils, with the aim of increasing production, has not only resulted in yield failure, but also disappointment among farmers. This study therefore established performance of some Tanzania rice genotypes under saline and saline-sodic conditions

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Présentation de l'éditeur

Many efforts have been made elsewhere to improve cultivated rice varieties for salt-tolerance. In Tanzania, such improvement has never been done though the cultivated land is increasingly dwindling due current environmental changes which increase the effects of salt affected soils in irrigared rice. Most farmers use either improved or local rice varieties regardless of the soil salt status. Varieties grown have never been tested or improved for salt tolerance. Studies found that significant variations in phenology, morphology and physiology across salty environments have also been observed among genotypes. When large differences exist between target environments, a distinct set of genes would be required for specific adaptation . Thus, cultivars selected in non-stressed environments may not necessarily be suited for stress environments. Experience also revealed that, introduction of high yielding varieties from non-stress soils into problem soils, with the aim of increasing production, has not only resulted in yield failure, but also disappointment among farmers. This study therefore established performance of some Tanzania rice genotypes under saline and saline-sodic conditions

Biographie de l'auteur

Sophia Kashenge-Killenga is a rice breeder by training and an agricultural research and development specialist with seven years of experience in research management, technology generation and dissemination. She holds a PhD in plant breeding from University of Kwa-Zulu Natal, South Africa. Currently, working at ARI-KATRIN Ifakara, Morogoro, Tanzania

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2012
Langue
anglais
ISBN 10 
3659260320
ISBN 13 
9783659260322
Reliure
Broché
Nombre de pages
92
Coordonnées du fabricant
non disponible
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