Comparison of the growth traits of a commercial pioneer tree species, paper mulberry (Broussonetia papyrifera L. vent.), with those of shade-tolerant tree species: Investigation of the ecophysiological mechanisms underlying shade-intolerance

Yoshiyuki Miyazawa, Chanhsom Manythong, Shinji Fukuda, Kazuo Ogata

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In rural areas of northern Laos, a commercially valuable pioneer tree species, paper mulberry (Broussonetia papyrifera L. Vent.) has been recommended for intercropping under plantations of commercial trees. However, less is understood about the growth of this pioneer tree species in the understorey and the mechanism underlying the shade intolerance. We measured growth characteristics for seedlings of paper mulberry under four light intensities. We compared the relative growth rates in aboveground biomass and standing leaf area (RGRmass and RGRleaf), lightcapture efficiency, and seeding-level mass-based daily photosynthetic rates (Amass) with those of field-grown seedlings of eight shade-tolerant species to identify factors potentially responsible for shade-intolerance. Most growth traits of the paper mulberry seedlings did not differ consistently from those of the shade tolerant species. The ecophysiological–architecturalmodel software showed higher Amass and RGRmass capacity in paper mulberry than in shade-tolerant species. Despite their higher RGRmass, paper mulberry seedlings had negative RGRleaf under shaded conditions due to short leaf lifespan. The linear RGRmass–RGRleaf relationship for paper mulberry had a high RGRmass intercept, indicating that a high RGRmass was required to provide positive RGRleaf. Progressive decreases in standing leaf area with time, and possibly photosynthesis, appear to be responsible for the shade-intolerance of paper mulberry. Although intercropping of paper mulberry has been suggested in the species’ native region, understorey cultivation of paper mulberry would only be possible with relatively open canopies.

Original languageEnglish
Pages (from-to)907-919
Number of pages13
JournalAgroforestry Systems
Volume88
Issue number5
DOIs
Publication statusPublished - Oct 1 2014

Fingerprint

Broussonetia papyrifera
pioneer species
growth traits
shade
seedling
intercropping
understory
seedlings
aboveground biomass
seeding
light intensity
native species
rural area
photosynthesis
plantation
comparison
canopy
software
leaves
Laos

All Science Journal Classification (ASJC) codes

  • Forestry
  • Agronomy and Crop Science

Cite this

@article{1a44b045310a490393e89240bc2b69a0,
title = "Comparison of the growth traits of a commercial pioneer tree species, paper mulberry (Broussonetia papyrifera L. vent.), with those of shade-tolerant tree species: Investigation of the ecophysiological mechanisms underlying shade-intolerance",
abstract = "In rural areas of northern Laos, a commercially valuable pioneer tree species, paper mulberry (Broussonetia papyrifera L. Vent.) has been recommended for intercropping under plantations of commercial trees. However, less is understood about the growth of this pioneer tree species in the understorey and the mechanism underlying the shade intolerance. We measured growth characteristics for seedlings of paper mulberry under four light intensities. We compared the relative growth rates in aboveground biomass and standing leaf area (RGRmass and RGRleaf), lightcapture efficiency, and seeding-level mass-based daily photosynthetic rates (Amass) with those of field-grown seedlings of eight shade-tolerant species to identify factors potentially responsible for shade-intolerance. Most growth traits of the paper mulberry seedlings did not differ consistently from those of the shade tolerant species. The ecophysiological–architecturalmodel software showed higher Amass and RGRmass capacity in paper mulberry than in shade-tolerant species. Despite their higher RGRmass, paper mulberry seedlings had negative RGRleaf under shaded conditions due to short leaf lifespan. The linear RGRmass–RGRleaf relationship for paper mulberry had a high RGRmass intercept, indicating that a high RGRmass was required to provide positive RGRleaf. Progressive decreases in standing leaf area with time, and possibly photosynthesis, appear to be responsible for the shade-intolerance of paper mulberry. Although intercropping of paper mulberry has been suggested in the species’ native region, understorey cultivation of paper mulberry would only be possible with relatively open canopies.",
author = "Yoshiyuki Miyazawa and Chanhsom Manythong and Shinji Fukuda and Kazuo Ogata",
year = "2014",
month = "10",
day = "1",
doi = "10.1007/s10457-014-9735-0",
language = "English",
volume = "88",
pages = "907--919",
journal = "Agroforestry Systems",
issn = "0167-4366",
publisher = "Springer Netherlands",
number = "5",

}

TY - JOUR

T1 - Comparison of the growth traits of a commercial pioneer tree species, paper mulberry (Broussonetia papyrifera L. vent.), with those of shade-tolerant tree species

T2 - Investigation of the ecophysiological mechanisms underlying shade-intolerance

AU - Miyazawa, Yoshiyuki

AU - Manythong, Chanhsom

AU - Fukuda, Shinji

AU - Ogata, Kazuo

PY - 2014/10/1

Y1 - 2014/10/1

N2 - In rural areas of northern Laos, a commercially valuable pioneer tree species, paper mulberry (Broussonetia papyrifera L. Vent.) has been recommended for intercropping under plantations of commercial trees. However, less is understood about the growth of this pioneer tree species in the understorey and the mechanism underlying the shade intolerance. We measured growth characteristics for seedlings of paper mulberry under four light intensities. We compared the relative growth rates in aboveground biomass and standing leaf area (RGRmass and RGRleaf), lightcapture efficiency, and seeding-level mass-based daily photosynthetic rates (Amass) with those of field-grown seedlings of eight shade-tolerant species to identify factors potentially responsible for shade-intolerance. Most growth traits of the paper mulberry seedlings did not differ consistently from those of the shade tolerant species. The ecophysiological–architecturalmodel software showed higher Amass and RGRmass capacity in paper mulberry than in shade-tolerant species. Despite their higher RGRmass, paper mulberry seedlings had negative RGRleaf under shaded conditions due to short leaf lifespan. The linear RGRmass–RGRleaf relationship for paper mulberry had a high RGRmass intercept, indicating that a high RGRmass was required to provide positive RGRleaf. Progressive decreases in standing leaf area with time, and possibly photosynthesis, appear to be responsible for the shade-intolerance of paper mulberry. Although intercropping of paper mulberry has been suggested in the species’ native region, understorey cultivation of paper mulberry would only be possible with relatively open canopies.

AB - In rural areas of northern Laos, a commercially valuable pioneer tree species, paper mulberry (Broussonetia papyrifera L. Vent.) has been recommended for intercropping under plantations of commercial trees. However, less is understood about the growth of this pioneer tree species in the understorey and the mechanism underlying the shade intolerance. We measured growth characteristics for seedlings of paper mulberry under four light intensities. We compared the relative growth rates in aboveground biomass and standing leaf area (RGRmass and RGRleaf), lightcapture efficiency, and seeding-level mass-based daily photosynthetic rates (Amass) with those of field-grown seedlings of eight shade-tolerant species to identify factors potentially responsible for shade-intolerance. Most growth traits of the paper mulberry seedlings did not differ consistently from those of the shade tolerant species. The ecophysiological–architecturalmodel software showed higher Amass and RGRmass capacity in paper mulberry than in shade-tolerant species. Despite their higher RGRmass, paper mulberry seedlings had negative RGRleaf under shaded conditions due to short leaf lifespan. The linear RGRmass–RGRleaf relationship for paper mulberry had a high RGRmass intercept, indicating that a high RGRmass was required to provide positive RGRleaf. Progressive decreases in standing leaf area with time, and possibly photosynthesis, appear to be responsible for the shade-intolerance of paper mulberry. Although intercropping of paper mulberry has been suggested in the species’ native region, understorey cultivation of paper mulberry would only be possible with relatively open canopies.

UR - http://www.scopus.com/inward/record.url?scp=85027939081&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85027939081&partnerID=8YFLogxK

U2 - 10.1007/s10457-014-9735-0

DO - 10.1007/s10457-014-9735-0

M3 - Article

AN - SCOPUS:85027939081

VL - 88

SP - 907

EP - 919

JO - Agroforestry Systems

JF - Agroforestry Systems

SN - 0167-4366

IS - 5

ER -