Influence of initial root length on physiological responses of cherrybark oak and Shumard oak seedlings to field drought conditions

Gazal, Rico; Kubiske, Mark E.

doi:10.1016/j.foreco.2003.08.017

Cited by 26 publications

(18 citation statements)

References 29 publications

(32 reference statements)

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“…Being a drought tolerant species, narra has a scattered root system that is characterized by a larger root system sorption zone (Castaneto, 1997). New lateral roots developing under drought condition could significantly contribute to the ecophysiological function of the whole plant system (Gazal and Kubiske, 2004). It was consistently noticed that seedlings applied with the lowest amount of water (50% of field capacity) yielded a high number of new and longer roots.…”

Section: Discussionmentioning

confidence: 99%

“…Strategies for assessing quality of planting stocks need to move away from the traditional approach of looking only at the sound morphological characteristics of seedlings (Grossnickle et al, 1991). These morphological indices often fail to account for differences in seedling physiology (Gazal and Kubiske, 2004). Hence, holistic assessment of stock quality requires the integration of both morphological and physiological attributes of seedlings.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Root growth potential and seedling morphological attributes of narra (Pterocarpus indicus Willd.) transplants

Gazal¹,

Blanche²,

Carandang³

2004

Forest Ecology and Management

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Root growth potential and seedling morphological attributes of narra (Pterocarpus indicus Willd.) transplants

Gazal¹,

Blanche²,

Carandang³

2004

Forest Ecology and Management

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“…Root system establishment effects were particularly evident for Q. robur grown in both Air-pots, which showed increased FOLR; whereas, as much FOLR biomass increase was observed in J. regia grown in AIR-3. Root growth and soil exploration are critical to physiological performance during field establishment and longer FOLR have been associated with higher leaf gas exchange rates (Gazal and Kubiske 2004). In particular, well-developed FOLR in bigger seedlings would affect the capability of plants to absorb water and nutrients, increasing root surface (Davis and Jacobs 2005;Dey and Parker 1997;Grossnickle 2005;Thompson and Schultz 1995).…”

Section: Field Trialmentioning

confidence: 99%

Can the use of large, alternative nursery containers aid in field establishment of Juglans regia and Quercus robur seedlings?

et al. 2015

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Over the last 30 years in Italy, a high percentage of tree plantations have failed to achieve the objective of enhancing the quality of forest products, and also restoring/ rehabilitating abandoned or degraded agricultural lands. In this study, we evaluated the effects of nursery cultivation in large, novel containers and duration of cultivation on early field establishment of 2-year-old seedlings of Quercus robur L. and Juglans regia L. Two sizes (9800 and 15,500 cm 3 ) of a new container (Superoots Air-pot Ò ) and one size (4900 cm 3 ) of a traditional container (Plastecnic Ò ) were tested and seedlings were sampled for shoot and root growth and biomass allocation. Prolonging the cultivation period to 2 years had a positive effect on both species, with a marked increase in above-and belowground biomass, maintaining a desirable balance between shoot and root systems. Both sizes of Air-pots for Q. robur and the bigger Air-pot for J. regia produced seedlings that were taller than 1.5 m, with a low branch component combined with a high frequency of apical dominance. The quantity and size of first order lateral roots varied between years within containers, and increased in deeper substrate layers during the second year. Early field results did not show marked signs of transplanting stress, but with low height growth in all treatments. Seedlings grown in both Air-pots exhibited well-developed and wellstructured root and shoot systems, thus showing promise in the establishment of high quality timber plantations of fine hardwoods; such attributes can be beneficial wherever

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“…Therefore, the number of FOLR may be an important factor determining seedling survival and growth (Kormanik 1986;Kormanik et al, 1995;Schultz and Thompson 1990;. Longer FOLR length was associated with higher leaf gas exchange rates (Gazal and Kubiske, 2004), and was provided sites for initiation of new higher-order roots (Thompson and Schultz, 1995).…”

Section: Discussionmentioning

confidence: 99%

Influence of Initial Seedling Size and Root Pruning Intensity on Growth of Transplanting Seedling of Quercus acutissma

Na¹,

Lee²,

Kim³

2013

Korean Journal of Plant Resources

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-The objective of this study was to examine the effect of root pruning intensity in combination with different initial seedling size on the growth of transplanting seedlings of Quercus acutissima. One-year-old seedlings were divided into three groups depending on their height, i.e. small (< 15 cm), medium (25-35 cm) and large size (35 cm <). Root of seedlings was pruned by three intensity such as, leaving 5 cm (severe), 10 cm (medium) and 15 cm (light) of taproot from the root-collar. After one year, we investigated survival rate, height and root-collar diameter (RCD) increment and final shoot dry weight. Also we measured characteristics of newly developed lateral roots such as number, total length, dry weight and diameter. Severe root pruning showed the lowest survival rate in all seedling size. Height increment, RCD increment and shoot dry weight were decreased with increasing intensity of root pruning. Seedlings of medium and light root pruning showed similar above-ground growth and dry weight of lateral roots. More large seedlings showed good survival rate, height increment and final shoot dry mass in all root pruning intensity. Therefore, one-year-old seedlings of Q. acutissima should be pruned taproot by 10 cm and transplanted to obtain excellent performance and increase the efficiency of transplanting work. Based on the findings of this study, it is important that applying to different root pruning intensity depending on initial seedling size for producing 2-year-old seedlings with excellent growth and high quality.

show abstract

Influence of initial root length on physiological responses of cherrybark oak and Shumard oak seedlings to field drought conditions

Cited by 26 publications

References 29 publications

Root growth potential and seedling morphological attributes of narra (Pterocarpus indicus Willd.) transplants

Root growth potential and seedling morphological attributes of narra (Pterocarpus indicus Willd.) transplants

Can the use of large, alternative nursery containers aid in field establishment of Juglans regia and Quercus robur seedlings?

Influence of Initial Seedling Size and Root Pruning Intensity on Growth of Transplanting Seedling of Quercus acutissma

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