Growth, morphological and yield responses of irrigated wheat (Triticum aestivum L.) genotypes to water stress
Water shortages is a major constraint in wheat production in South Africa. It is important therefore to assist irrigated wheat farmers to identify water stress tolerant growth stages in irrigated wheat genotypes. This study evaluated new wheat genotypes for water stress at different growth stages. A...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2019-05-01
|
| Series: | Acta Agriculturae Scandinavica. Section B, Soil and Plant Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/09064710.2019.1577481 |
| _version_ | 1797684419591405568 |
|---|---|
| author | Unathi Liwani Lembe S. Magwaza Alfred O. Odindo Nkanyiso J. Sithole |
| author_facet | Unathi Liwani Lembe S. Magwaza Alfred O. Odindo Nkanyiso J. Sithole |
| author_sort | Unathi Liwani |
| collection | DOAJ |
| description | Water shortages is a major constraint in wheat production in South Africa. It is important therefore to assist irrigated wheat farmers to identify water stress tolerant growth stages in irrigated wheat genotypes. This study evaluated new wheat genotypes for water stress at different growth stages. An 8 (genotypes) × 2 (water treatments) × 3 (growth stages) factorial experiment was laid out in a randomised complete block design with three replicates. The results indicated that plant height was not affected (p > .05) by water stress at tillering and grain filling. Water stress imposed at the tillering stage reduced the number of fertile tillers (p < .05) in susceptible genotypes while at the flowering and grain filling stages all genotypes were tolerant (p > .05). Aboveground biomass was only affected (p < .05) by water stress imposed at the tillering stage. Water stress reduced grain yield on the genotypes where stress was imposed at the tillering stage (p < .05); whereas when stress was imposed at flowering and grain filling the grain yield was not reduced (p > .05). This study provided evidence to suggest that most genotypes were tolerant to water stress at the flowering and grain filling stages. |
| first_indexed | 2024-03-12T00:29:23Z |
| format | Article |
| id | doaj.art-979b373714354207a13cc56be90d42d7 |
| institution | Directory Open Access Journal |
| issn | 0906-4710 1651-1913 |
| language | English |
| last_indexed | 2024-03-12T00:29:23Z |
| publishDate | 2019-05-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Acta Agriculturae Scandinavica. Section B, Soil and Plant Science |
| spelling | doaj.art-979b373714354207a13cc56be90d42d72023-09-15T10:26:24ZengTaylor & Francis GroupActa Agriculturae Scandinavica. Section B, Soil and Plant Science0906-47101651-19132019-05-0169436937610.1080/09064710.2019.15774811577481Growth, morphological and yield responses of irrigated wheat (Triticum aestivum L.) genotypes to water stressUnathi Liwani0Lembe S. Magwaza1Alfred O. Odindo2Nkanyiso J. Sithole3University of KwaZulu-NatalUniversity of KwaZulu-NatalUniversity of KwaZulu-NatalUniversity of KwaZulu-NatalWater shortages is a major constraint in wheat production in South Africa. It is important therefore to assist irrigated wheat farmers to identify water stress tolerant growth stages in irrigated wheat genotypes. This study evaluated new wheat genotypes for water stress at different growth stages. An 8 (genotypes) × 2 (water treatments) × 3 (growth stages) factorial experiment was laid out in a randomised complete block design with three replicates. The results indicated that plant height was not affected (p > .05) by water stress at tillering and grain filling. Water stress imposed at the tillering stage reduced the number of fertile tillers (p < .05) in susceptible genotypes while at the flowering and grain filling stages all genotypes were tolerant (p > .05). Aboveground biomass was only affected (p < .05) by water stress imposed at the tillering stage. Water stress reduced grain yield on the genotypes where stress was imposed at the tillering stage (p < .05); whereas when stress was imposed at flowering and grain filling the grain yield was not reduced (p > .05). This study provided evidence to suggest that most genotypes were tolerant to water stress at the flowering and grain filling stages.http://dx.doi.org/10.1080/09064710.2019.1577481floweringgrain fillingharvest indextilleringwheat tolerant genotypes |
| spellingShingle | Unathi Liwani Lembe S. Magwaza Alfred O. Odindo Nkanyiso J. Sithole Growth, morphological and yield responses of irrigated wheat (Triticum aestivum L.) genotypes to water stress Acta Agriculturae Scandinavica. Section B, Soil and Plant Science flowering grain filling harvest index tillering wheat tolerant genotypes |
| title | Growth, morphological and yield responses of irrigated wheat (Triticum aestivum L.) genotypes to water stress |
| title_full | Growth, morphological and yield responses of irrigated wheat (Triticum aestivum L.) genotypes to water stress |
| title_fullStr | Growth, morphological and yield responses of irrigated wheat (Triticum aestivum L.) genotypes to water stress |
| title_full_unstemmed | Growth, morphological and yield responses of irrigated wheat (Triticum aestivum L.) genotypes to water stress |
| title_short | Growth, morphological and yield responses of irrigated wheat (Triticum aestivum L.) genotypes to water stress |
| title_sort | growth morphological and yield responses of irrigated wheat triticum aestivum l genotypes to water stress |
| topic | flowering grain filling harvest index tillering wheat tolerant genotypes |
| url | http://dx.doi.org/10.1080/09064710.2019.1577481 |
| work_keys_str_mv | AT unathiliwani growthmorphologicalandyieldresponsesofirrigatedwheattriticumaestivumlgenotypestowaterstress AT lembesmagwaza growthmorphologicalandyieldresponsesofirrigatedwheattriticumaestivumlgenotypestowaterstress AT alfredoodindo growthmorphologicalandyieldresponsesofirrigatedwheattriticumaestivumlgenotypestowaterstress AT nkanyisojsithole growthmorphologicalandyieldresponsesofirrigatedwheattriticumaestivumlgenotypestowaterstress |