نتایج جستجو برای: seedlings quality

تعداد نتایج: 776445  

2016
Shi-Jean S. Sung James D. Haywood

Longleaf pine (Pinus palustris) seedlings were cultured with air lateral root pruning (side-vented containers, VT) or without (solid-walled containers, SW). Seedling root system morphology and growth were assessed before planting and 8 and 14 months after planting. Although VT seedlings had greater root collar diameter than the SW before planting, seedling height and ground line diameter were n...

1997

leaf hydraulic conductance, components of tissue water potential, hydraulic architecture parameters and xylem embolism were examined in greenhouse-grown two-year-old Aleppo pine (Pinus halepensis Mill.) seedlings from six origins representing the geographic range of the species in Italy. Cortical resin composition of the seedlings was also determined. Measurements were made on well-watered seed...

2015
Nan Lu Xia Zhou Ming Cui Meng Yu Jinxing Zhou Yongsheng Qin Yun Li Douglas L. Godbold

Morus alba L. is an important tree species planted widely in China because of its economic value. In this report, we investigated the influence of two arbuscular mycorrhizal fungal (AMF) species, Glomus mosseae and Glomus intraradices, alone and together, on the growth of M. alba L. seedlings under greenhouse conditions. The growth parameters and physiological performance of M. alba L. seedling...

2011
Benjamin O. Knapp G. Geoff Wang Huifeng Hu Joan L. Walker Carsyn Tennant

0378-1127/$ see front matter 2011 Published by doi:10.1016/j.foreco.2011.05.044 ⇑ Corresponding author. Tel.: +1 864 656 4864; fax E-mail address: [email protected] (G.G. Wang). Historical land use and management practices in the southeastern United States have resulted in the dominance of loblolly pine (Pinus taeda L.) on many upland sites that historically were occupied by longleaf pine (Pinu...

2000
Shi-Jean S. Sung Paul P. Kormanik Stanley J. Zarnoch

Northern’ red oak (Quercus rubra L.) (NRO) and white oak (0. alba L.) (WO) acorns were sown into wooden plots and grown under 30 percent shade screen (30 percent S) or 70 percent shade screen (70 percent S). Seedlings grown under full sun were the controls (C). At the end of the first year, the 30 percent S NRO had 30 percent greater seedling dry weight (DW) than C seedlings. No growth differen...

Journal: :Journal of environmental biology 2006
JaeHong Kim InSun Yoon MiYoung Lee

The effects of gibberellin (GA) on the expression of GA-20 oxidase gene homolog were examined in light-grown seedlings and dark-grown seedlings of DongJinByeo. The growth rates of the stems of etiolated seedlings were faster than those of green seedlings. However, upon addition of GA to these seedlings, the stem growth rates of green seedlings were faster than those of etiolated seedlings. To u...

Journal: :Tree physiology 1994
B D Miller V R Timmer

To test effects of fertilization on late-season growth and nutrient content of container-grown red pine (Pinus resinosa Ait.), seedlings were subjected to a factorial combination of two fertilization regimes (exponentially increasing concentrations providing 25 (1N) and 75 (3N) mg N seedling(-1), respectively) and two irrigation regimes (well-watered and water-stressed) followed by drought-hard...

2003
Shouren Zhang Keping Ma Lingzhi Chen

Temporal changes in gas exchange and chlorophyll fluorescence of Paeonia suffruticosa seedlings acclimated to three levels of light environments were investigated. There was a significant photosynthetic depression in seedlings acclimated to a long time of shading and then suddenly exposed to full ambient radiation. The decreased transpiration (E ) resulted from ‘feed-forward effect’ mechanism [...

2016
Shi-Jean S. Sung Stacy L. Clark Scott Schlarbaum Daniel Dey Daniel J. Leduc

Seedlings from two families of the BC3F3 backcross generation of the American chestnut (Castanea dentata) and Chinese chestnut (C. mollissima) were cultured in 2013 in Missouri using the Root Production Method®, a container-based system used to avoid disease problems associated with bareroot nursery production. After culling part of the seedlings at initial leaf formation in a greenhouse, both ...

2013
R. Kasten Dumroese James P. Barnett D. Paul Jackson Mark J. Hainds

Production of container longleaf pine (Pinus palustris Mill.) seedlings for reforestation and restoration exceeds that of bare-root production, but information on container production techniques has been slow to develop. Because outplanting success requires quality seedlings, interim guidelines were proposed in 2002 to assist nursery managers and tree planters in developing and using the best s...

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