Abstract
The emergence performance of different rootstocks and watermelon cultivars at different temperatures, and the effect of hypocotyl structure on grafting success and survival rate were investigated. Evaluated rootstocks were Cucurbita moschata (landrace), C. maxima (Ar›can local cultivar), Strong Tosa (C. maxima x C. moschata), P360 (C. maxima x C. moschata), Luffa cylindrica, Benincasa hispida, Lagenaria siceraria (landrace), Skopje (Landrace), and 2 Lagenaria hybrids, 216 and FR Gold. The Crimson Tide watermelon cultivar was used as scion. Emergence tests at 14 …C, 18 …C and 25 …C were carried out for all rootstocks and scion seeds in a growth chamber. Cucurbita type rootstocks showed better emergence performance at low temperatures than did other rootstocks and scion. However, B. hispida, L. cylindrica, Lagenaria type rootstocks and scion did not emerge at 14 …C and they were rotten. At 18 …C, the earliest emergence was recorded in Cucurbita type rootstocks while the latest emergence was observed in B. hispida and L. cylindrica. Rootstocks and scion did not show any difference in emergence rate at 25 …C. B. hispida and L. cylindrica had the thinnest and shortest hypocotyls which made grafting difficult. The survival rate of grafted plants was inversely correlated with the difference in diameters of scion and rootstock. At the same time survival rate was significantly affected by the rootstocks genotype. Rootstocks had different numbers of vascular bundles but the survival rate was not affected by the number of vascular bundles whereas the plant growth rate was positively affected. In general, Lagenaria type rootstocks had a higher survival rate than did other rootstocks. The hole insertion grafting technique had a significantly lower survival rate than did the approaching technique in Cucurbita type rootstocks. All graft combinations produced higher plant biomass than did the control plant, except for the L. cylindrica. The study showed that rootstock influences survival rates and plant growth in the use of grafting applications in watermelon.
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Claims 13
Claim · model-written summary
Cucurbita rootstocks emerged better at low temperatures than other rootstocks and scion.
- Taxon
- watermelon
Citrullus lanatust0 - Material
- Cucurbita type rootstockse0
- Treatment
- low temperaturese0
- Outcome
- emergence performancee0
- Direction
- bettere0
- Comparator
- other rootstocks and scione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cucurbita type rootstocks showed better emergence performance at low temperatures than did other rootstocks and scion.”
t0“Watermelon Seedlings”
Claim · model-written summary
B. hispida, L. cylindrica, Lagenaria rootstocks and scion rotted without emergence at 14 …C.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- 14 …Ce0
- Outcome
- did not emergee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B. hispida, L. cylindrica, Lagenaria type rootstocks and scion did not emerge at 14 …C and they were rotten.”
t0“Watermelon Seedlings”
Claim · model-written summary
Cucurbita rootstocks emerged earliest at 18 …C.
- Taxon
- watermelonCitrullus lanatust0
- Material
- Cucurbita type rootstockse0
- Treatment
- 18 …Ce0
- Outcome
- emergencee0
- Direction
- earlieste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 18 …C, the earliest emergence was recorded in Cucurbita type rootstocks”
t0“Watermelon Seedlings”
Claim · model-written summary
B. hispida and L. cylindrica emerged latest at 18 …C.
- Taxon
- watermelonCitrullus lanatust0
- Outcome
- emergencee0
- Direction
- lateste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the latest emergence was observed in B. hispida and L. cylindrica.”
t0“Watermelon Seedlings”
Claim · model-written summary
Rootstocks and scion had similar emergence rates at 25 …C.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- 25 …Ce0
- Outcome
- emergence ratee0
- Direction
- did not show any differencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rootstocks and scion did not show any difference in emergence rate at 25 …C.”
t0“Watermelon Seedlings”
Claim · model-written summary
B. hispida and L. cylindrica had the thinnest and shortest hypocotyls, complicating grafting.
- Taxon
- watermelonCitrullus lanatust0
- Organ / stage
- hypocotylse0
- Outcome
- thinnest and shortest hypocotylse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B. hispida and L. cylindrica had the thinnest and shortest hypocotyls which made grafting difficult.”
t0“Watermelon Seedlings”
Claim · model-written summary
Graft survival declined as scion and rootstock diameter difference rose.
- Taxon
- watermelonCitrullus lanatust0
- Organ / stage
- scion and rootstocke0
- Outcome
- survival rate of grafted plantse0
- Direction
- inversely correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The survival rate of grafted plants was inversely correlated with the difference in diameters of scion and rootstock.”
t0“Watermelon Seedlings”
Claim · model-written summary
Rootstock genotype significantly affected graft survival.
- Taxon
- watermelonCitrullus lanatust0
- Material
- rootstocks genotypee0
- Outcome
- survival ratee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“survival rate was significantly affected by the rootstocks genotype.”
t0“Watermelon Seedlings”
Claim · model-written summary
Vascular bundle number did not affect survival rate.
- Taxon
- watermelonCitrullus lanatust0
- Organ / stage
- vascular bundlese0
- Outcome
- survival ratee0
- Direction
- not affectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the survival rate was not affected by the number of vascular bundles whereas the plant growth rate was positively affected.”
t0“Watermelon Seedlings”
Claim · model-written summary
Vascular bundle number was positively associated with plant growth rate.
- Taxon
- watermelonCitrullus lanatust0
- Organ / stage
- vascular bundlese0
- Outcome
- plant growth ratee0
- Direction
- positively affectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the survival rate was not affected by the number of vascular bundles whereas the plant growth rate was positively affected.”
t0“Watermelon Seedlings”
Claim · model-written summary
Lagenaria rootstocks generally yielded higher graft survival.
- Taxon
- watermelonCitrullus lanatust0
- Material
- Lagenaria type rootstockse0
- Outcome
- survival ratee0
- Direction
- highere0
- Comparator
- other rootstockse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In general, Lagenaria type rootstocks had a higher survival rate than did other rootstocks.”
t0“Watermelon Seedlings”
Claim · model-written summary
Hole insertion grafting produced significantly lower survival than approaching grafting in Cucurbita rootstocks.
- Taxon
- watermelonCitrullus lanatust0
- Material
- Cucurbita type rootstockse0
- Treatment
- hole insertion grafting techniquee0
- Outcome
- survival ratee0
- Direction
- lowere0
- Comparator
- approaching techniquee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The hole insertion grafting technique had a significantly lower survival rate than did the approaching technique in Cucurbita type rootstocks.”
t0“Watermelon Seedlings”
Claim · model-written summary
Graft combinations except L. cylindrica produced more biomass than controls.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- graft combinationse0
- Outcome
- plant biomasse0
- Direction
- highere0
- Qualifier
- except for the L. cylindricae0
- Comparator
- control plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All graft combinations produced higher plant biomass than did the control plant, except for the L. cylindrica.”
t0“Watermelon Seedlings”
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