Effects Of Drought Stress on Germination in Fourteen Provenances of Pinus Brutia Ten. Seeds in Turkey

Şevik, Hakan; Ertürk, Nihat

doi:10.24925/turjaf.v3i5.294-299.190

Cited by 17 publications

(11 citation statements)

References 22 publications

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“…On the other hand, for G. arborea, 16.67 days after sowing was required for the completion of germination under daily watering frequency; whereas 22 days was required with watering at every 15 days interval. The results are in conformity with the findings of Sevik and Ertiirk [8] on nine species that demonstrated 100% germination of all the species under control treatment (no water stress), while it decreased with increasing water stress. The results also agree with the findings of Khurana and Singh [9] that revealed significant reduction in germination of Terminalia arjuna, Terminalia chebula, Acacia nilotica and Phyllanthus emblica under waters stress.…”

Section: Germination Percentagesupporting

confidence: 91%

Effect of Watering Schedules on Seed Germination of Two Major Agroforestry Species Dalbergia sissoo and Gmelina arborea

Gupta

Kumar²,

Malakar³

2022

IJECC

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Aims: Water is an important natural resource supporting life and growth of plants heavily relies on water availability throughout its life cycle. Moisture stress is a major limiting factor in forest crops leading to unsuccessful seed germination. This study investigates the impact of moisture stress on the seed germination of two important agroforestry species Dalbergia sissoo and Gmelina arborea through manipulating watering schedules after sowing seeds. Study Design: Two independent experiments for Dalbergia sissoo and Gmelina arborea were designed in a Completely Randomized Block Design (CRBD) with six treatments and three replications for each treatment Place of Study: Faculty of Forestry, Birsa Agricultural University, Ranchi. Methodology: The complete experiment was carried inside a temporary polyhouse where the experimental materials were exposed to the six different watering schedule treatments. The first irrigation for all the treatments were started at the same time. The data recorded during the experiment were subjected to analysis of variance (ANOVA) for statistical significance and difference among treatments were determined by Duncan’s Multiple range test at (P = .05) level. Results: Significant differences were observed among the treatments and the results show that with increasing level of moisture stress, the germination performance in both species is highly reduced both in terms of germination percentage and germination energy. Conclusion: Daily watering to the seeds can help to achieve maximum and early seed germination as evident from data of germination energy with maximum values recorded for the treatments with daily watering schedule.

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Section: Germination Percentagesupporting

confidence: 91%

Effect of Watering Schedules on Seed Germination of Two Major Agroforestry Species Dalbergia sissoo and Gmelina arborea

Gupta

Kumar²,

Malakar³

2022

IJECC

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“…Environmental stresses have an increased effect on trees, such as water and salt stress in arid and semiarid regions, reducing tree growth and development due to global warming [13]. Water stress has gained much attention in recent years that its effects on all stages of tress from germination to mature stage.…”

Section: Introductionmentioning

confidence: 99%

Examining Seed Germination Rate and Seedlings Gas Exchange Performances of Some Turkish Red Pine Provenances Under Water Stress

Koç

2021

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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With climate change, global warming has increased adverse effects on living things in our country. In these adverse effects, water scarcity is the most crucial problem due to the increase in temperature and decrease in precipitation. Forests are the most affected ecosystem among others by water scarcity in our country. This study tried to determine the 5-year-old seeds and 1-year-old seedlings (produced from the same seeds) of some Turkish red pine provenance' responses to different water stress levels. First, how the water stress levels (0, -0.2, -0.4, -0.6, -0.8 MPa) affect seed germination of these provenances was determined. Secondly, gas exchange parameters [net photosynthesis (Anet), stomatal conductance (gs), transpiration (E), and intrinsic water use efficiency (iWUE)] under different water stress were determined in the seedlings obtained from these species' seeds. As a result of the germination test, Denizli-Çameli (DC) provenance had the highest rate (48%), while Maraş-Suçatı had the lowest rate (29%) under control treatment. The highest germination rate was obtained in Burdur/Bucak provenance (5%) under -0.2 MPa osmotic potential. For gas exchange parameters, Antalya/Gündoğmuş provenance had the highest Anet, gs values while DC provenance had the lowest Anet, gs, and E values when provenance is considered as a single factor. Besides, increasing in irrigation increased Anet, gs, and E while decreased the iWUE. The lowest seedling E under water stress can be explained because this species responds to the water shortage by closing its stomata. Among the Turkish red pine origins, DC provenance showed higher drought tolerance than others.

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“…Drought has often been observed in many regions worldwide. Drought stress is crucial abiotic stressor limiting plant growth and physiology among environmental stresses (Sevik & Erturk, 2015;Liet at al., 2020;Guo et al, 2021;Koç, 2021b;Koç, 2021 c). The frequency of drought events will likely be more common by the end of the 21 st century due to climatic warming from increased concentrations of greenhouse gasses (IPCC, 2014a;Varol et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

EXAMINATION OF GAS EXCHANGE PARAMETERS OF Abies balsamea (L) MILL. AND Abies concolor SAPLINGS, GROWN UNDER VARIOUS WATER REGIME, EXPOSED TO EXTREME DROUGHT STRESS AT THE END OF THE GROWING SEASON

Koç

2021

Turkish Journal of Forest Science

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Two-year-old (plug+1) containerized Abies balsamea (L) Mill. and Abies concolor saplings were grown under various irrigation in the greenhouse to examine gas exchange parameters end of the growing period when they were exposed to extreme drought stress. Relative height growth (RHG) and relative root collar diameter (RRCD) were measured next to gas exchange parameters, such as net photosynthetic rate (Anet), stomatal conductance (gs), transpiration rate (E), intrinsic water use efficiency (iWUE=Anet/gs), and water use efficiency (WUE=Anet/E). As a result, Abies balsamea saplings had a higher RHG and RRCD than Abies concolor. Species had a significant effect on leaf gas exchange parameters that Abies balsamea had a higher Anet, gs, and a lower iWUE than Abies concolor. Increasing irrigation increased Anet and E. The interaction of species and time was statistically significant for gs and iWUE measurement. İncreasing prolonged drought decreased gs and did not change iWUE values for Abies balsamea, while increased gs and reduced iWUE for Abies concolor saplings. Even though Anet, E, and WUE were not statistically significant under the interaction of species and time, there is a decreasing trend for Abies balsamea on these parameters. In contrast, Abies concolor had a decreasing trend on Anet, and WUE and an increasing trend for gs when the saplings were exposed to extreme drought or extended the dehydration period were observed. Abies balsamea had a better performance and drought tolerance than Abies concolor when exposed to a prolonged drought.

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Effects Of Drought Stress on Germination in Fourteen Provenances of Pinus Brutia Ten. Seeds in Turkey

Cited by 17 publications

References 22 publications

Effect of Watering Schedules on Seed Germination of Two Major Agroforestry Species Dalbergia sissoo and Gmelina arborea

Effect of Watering Schedules on Seed Germination of Two Major Agroforestry Species Dalbergia sissoo and Gmelina arborea

Examining Seed Germination Rate and Seedlings Gas Exchange Performances of Some Turkish Red Pine Provenances Under Water Stress

EXAMINATION OF GAS EXCHANGE PARAMETERS OF Abies balsamea (L) MILL. AND Abies concolor SAPLINGS, GROWN UNDER VARIOUS WATER REGIME, EXPOSED TO EXTREME DROUGHT STRESS AT THE END OF THE GROWING SEASON

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