Abstract
The present study was conducted to examine the response of grafted watermelon (cv. Aswan) plants to deficit irrigation by using different cucurbit rootstocks viz. Giada, Shintoza, Strong toza, Ferro and Pumpkin, compared with un-grafted plants. Water treatments were applied in a field experiment under 100%, 70% and 50% of Evapotranspiration (ET). Results indicated decrease in vegetative growth (number of leaves and branches, length of the main stem), leaf relative water content, reproductive growth and fruit yield, under water stress, as compared to the control (100% ET). Results also showed reduced N, P and K contents in the leaves under water stress condition. However, proline content and antioxidant enzymes: superoxide dismutase (SOD) and catalase (CAT) were higher in water stressed plants than those receiving 100% water. Under severe water stress, all graft combinations had generally better growth and yield performance than un-grafted plants. The grafted plants of Aswan/Ferro significantly recorded the lowest decline in number of fruits/plant, total yield and flesh SSC under 50% ET irrigation treatment, as well as the lowest decline in N and P content. It is concluded that grafting watermelon plants onto specific rootstock had the potential to increase water stress tolerance. This was associated with increase in proline, and the activities of SOD and CAT in their leaves.
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Claims 10
Claim · model-written summary
In field-grown watermelon, water stress (70% and 50% ET) decreased vegetative growth (number of leaves and branches, length of the main stem) compared with the 100% ET control.
- Taxon
- watermelon
Citrullus lanatuse1 - Treatment
- water stresse0
- Outcome
- vegetative growthe0
- Direction
- decreasee0
- Comparator
- control (100% ET)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease in vegetative growth (number of leaves and branches, length of the main stem), leaf relative water content, reproductive growth and fruit yield, under water stress, as compared to the control (100% ET)”
e1“grafted watermelon (cv. Aswan)”
Claim · model-written summary
Water stress decreased leaf relative water content of watermelon compared with the 100% ET control.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- water stresse0
- Outcome
- leaf relative water contente0
- Direction
- decreasee0
- Comparator
- control (100% ET)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease in vegetative growth (number of leaves and branches, length of the main stem), leaf relative water content, reproductive growth and fruit yield, under water stress, as compared to the control (100% ET)”
e1“grafted watermelon (cv. Aswan)”
Claim · model-written summary
Water stress decreased reproductive growth and fruit yield of watermelon compared with the 100% ET control.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- water stresse0
- Outcome
- reproductive growth and fruit yielde0
- Direction
- decreasee0
- Comparator
- control (100% ET)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease in vegetative growth (number of leaves and branches, length of the main stem), leaf relative water content, reproductive growth and fruit yield, under water stress, as compared to the control (100% ET)”
e1“grafted watermelon (cv. Aswan)”
Claim · model-written summary
Water stress reduced N, P and K contents in watermelon leaves.
- Taxon
- watermelonCitrullus lanatuse1
- Organ / stage
- leavese0
- Treatment
- water stresse0
- Outcome
- N, P and K contentse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced N, P and K contents in the leaves under water stress condition”
e1“grafted watermelon (cv. Aswan)”
Claim · model-written summary
Proline content and the antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT) were higher in water-stressed watermelon plants than in plants receiving 100% water.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- water stressed plantse0
- Outcome
- proline content and antioxidant enzymes: superoxide dismutase (SOD) and catalase (CAT)e0
- Direction
- highere0
- Comparator
- those receiving 100% watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proline content and antioxidant enzymes: superoxide dismutase (SOD) and catalase (CAT) were higher in water stressed plants than those receiving 100% water”
e1“grafted watermelon (cv. Aswan)”
Claim · model-written summary
Under severe water stress, all graft combinations had generally better growth and yield performance than un-grafted watermelon plants.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- graft combinationse0
- Outcome
- growth and yield performancee0
- Direction
- bettere0
- Qualifier
- Under severe water stresse0
- Comparator
- un-grafted plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under severe water stress, all graft combinations had generally better growth and yield performance than un-grafted plants”
e1“grafted watermelon (cv. Aswan)”
Claim · model-written summary
Aswan/Ferro grafted plants significantly recorded the lowest decline in number of fruits per plant, total yield and flesh SSC under 50% ET irrigation.
- Taxon
- watermelonCitrullus lanatuse1
- Material
- Aswan/Ferroe0
- Treatment
- 50% ET irrigation treatmente0
- Outcome
- number of fruits/plant, total yield and flesh SSCe0
- Direction
- lowest declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The grafted plants of Aswan/Ferro significantly recorded the lowest decline in number of fruits/plant, total yield and flesh SSC under 50% ET irrigation treatment”
e1“grafted watermelon (cv. Aswan)”
Claim · model-written summary
Aswan/Ferro grafted plants showed the lowest decline in leaf N and P content.
- Taxon
- watermelonCitrullus lanatuse2
- Material
- Aswan/Ferroe0
- Outcome
- N and P contente1
- Direction
- lowest declinee1
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The grafted plants of Aswan/Ferro”
e1“as well as the lowest decline in N and P content”
e2“grafted watermelon (cv. Aswan)”
Claim · model-written summary
The authors conclude that grafting watermelon onto specific rootstocks had the potential to increase water stress tolerance.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- grafting watermelon plants onto specific rootstocke0
- Outcome
- water stress tolerancee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grafting watermelon plants onto specific rootstock had the potential to increase water stress tolerance”
Claim · model-written summary
Increased water stress tolerance in grafted watermelon was associated with increased proline and SOD and CAT activities in the leaves.
- Taxon
- watermelonCitrullus lanatuse1
- Organ / stage
- leavese0
- Outcome
- proline, and the activities of SOD and CATe0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This was associated with increase in proline, and the activities of SOD and CAT in their leaves”
e1“grafted watermelon (cv. Aswan)”
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