Adventitious roots, leaf abscission and nutrient status of flooded Gmelina and Tectona seedlings

Osundina, M. A.; Osonubi, O.

doi:10.1093/treephys/5.4.473

Cited by 14 publications

(7 citation statements)

References 16 publications

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“…G. arborea seedlings show similar behavior in case of salt and drought stress but show better adaptablity for waterlogging stress. Likewise, Osundina and Osonubi (1988) found the flood tolerance behavior of G. arborea. T. grandis seedlings were also unable to tolerate salt stress conditions but show slight and good tolerance behavior to drought and waterlogging conditions respectively.…”

Section: Discussionmentioning

confidence: 90%

Mortality of Tropical Forest Tree Seedlings Under Water and Salt Stress Conditions

Sachan

Jain

2017

JPSP

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Mortality of selected tropical forest tree species seedlings viz. Tectona grandis, Pongamia pinnata, Dalbergia latifolia and Gmelina arborea were tested under water and salt stress conditions for 4 months under nursery stage. Water stress included moderate and severe waterlogging & moderate and severe drought conditions. The salt stress in the soil was maintained to 4, 8 and 12 ds/m. Pot culture experiments with twenty treatment combinations following RBD factorial design were conducted in TFRI Jabalpur nursery. The water equivalent to the field capacity of the soil was provided to the seedlings to maintain waterlogging. The drought condition in polybags was maintained according to Permanent Wilting point (PWP), which was calculated on the basis of Cumulative Pan Evaporation (CPE) values measured through Open Pan Evaporimeter. Mortality of seedlings of the species under study increased with the increase in salt concentration from 4 to 12 ds/m. Gmelina arborea shown 100% mortality in 4ds/m, 8ds/m and 12ds/m concentration of salt. Cumulative effect of salt and waterlogging & salt and drought was found to be more prominent in Gmelina arborea as compare to other three species. Tectona grandis was found to be more tolerable to waterlogged followed by drought conditions. Waterlogging conditions observed to be excellent for Pongamia pinnata seedlings plantation shown 0% mortality. As a whole, the mortality of seedlings due to water and salt stress was found in the order Dalbergia latifolia (90.95%) > Gmelina arborea (82.50%) > Tectona grandis (74%) > Pongamia pinnata (35.56%).

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Section: Discussionmentioning

confidence: 90%

Mortality of Tropical Forest Tree Seedlings Under Water and Salt Stress Conditions

Sachan

Jain

2017

JPSP

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“…Few studies have examined the effects of adventitious root removal or arbuscular mycorrhizal fungi on the primary root system and/or patterns of resource allocation in wetland plant species, thus, comparisons are limited. Adventitious root removal led to a reduction in total root length of Gmelina arborea seedlings (Osundina and Osonubi, 1989) and a decrease in root and shoot dry mass for Macroptilium lathyroides and Vigna luteola (Javier, 1985). In contrast, no detectable differences were found in root dry weight of Epilobium hirsutum (Etherington, 1984) or Platanus occidentalis (Tsukahara and Kozlowski, 1985) following adventitious root removal.…”

Section: Patterns Of Resource Allocationmentioning

confidence: 99%

Relationships among Three Pathways for Resource Acquisition and their Contribution to Plant Performance in the Emergent Aquatic Plant Lythrum salicaria (L.)

Stevens

Peterson

2007

Plant Biology

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Three pathways for resource acquisition exist in the emergent aquatic plant, Lythrum salicaria (L.); a subterranean root system, a free-floating adventitious root system, and arbuscular mycorrhiza (AM) fungal hyphae colonizing subterranean roots. This study examined the relationship(s) among these pathways and their contribution to plant performance. If the free-floating adventitious root system and/or AM fungi contribute to plant growth in wetland habitats, we predicted that their absence would result in a significant reduction in plant performance. Furthermore, if a reduction in resource uptake, effected by an absence of free-floating adventitious roots and/or AM fungi, is compensated for by increased allocation to remaining pathway(s) for resource uptake, we predicted altered patterns of resource allocation among shoots and the remaining pathway(s) for resource uptake. Contrary to our predications, plants experiencing adventitious root removal and/or grown in the absence of AM fungi generally had greater biomass and total shoot height than controls. Similarly, while levels of AM colonization and subterranean root biomass displayed a treatment effect, the observed responses did not correspond with our predictions. This was also true for shoot : subterranean root dry weight ratios. Our results indicate that there is interaction among the 3 pathways for resource acquisition in L. salicaria and an effect on plant performance. The adaptive significance of these characteristics is unclear, highlighting the potential difficulties in extrapolating from terrestrial to aquatic plant species and among aquatic plant species with potentially different life history strategies.

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“…which are specifically adapted to flooded environments [83,84]. We have not attempted to comprehensively catalogue these exceptions, which are not always consistent, even for the particular adapted species [85], but have found a few reports for several species [86][87][88][89][90]. It is not always clear what caused these responses, although factors may include intrinsic species adaptations to hypoxia, gradual exposure allowing adaptation, exposure brevity or an undepleted oxy gen supply.…”

Section: Hypdxia and Stomatal Closurementioning

confidence: 99%

Root Oxygen Deprivation and the Reduction of Leaf Stomatal Aperture and Gas Exchange

Sojka¹,

Oosterhuis²,

Scott³

2005

Handbook of Photosynthesis, Second Edition

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Adventitious roots, leaf abscission and nutrient status of flooded Gmelina and Tectona seedlings

Cited by 14 publications

References 16 publications

Mortality of Tropical Forest Tree Seedlings Under Water and Salt Stress Conditions

Mortality of Tropical Forest Tree Seedlings Under Water and Salt Stress Conditions

Relationships among Three Pathways for Resource Acquisition and their Contribution to Plant Performance in the Emergent Aquatic Plant Lythrum salicaria (L.)

Root Oxygen Deprivation and the Reduction of Leaf Stomatal Aperture and Gas Exchange

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