Development of Tree Vigor Prediction Method at an Early Stage Based on Stem Hydraulic Conductance of Seedlings in Citrus Rootstocks

Iwasaki, Mitsunori; Fukamachi, Hiroshi; Satoh, Keiko; Nesumi, Hirohisa; Yoshioka, Terutaka

doi:10.2503/jjshs1.80.390

Cited by 7 publications

(4 citation statements)

References 18 publications

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“…Under this assumption, the effects of both grafting and pot size on plant growth can be explained by variances in leaf photosynthesis, stomatal conductance, and hydraulic conductance originating from root growth (Iwasaki et al, 2011;Poorter et al, 2012a;Taylaran et al, 2011). This partly supports our result that enlarging the pot size increased both RGR and NAR (Fig.…”

Section: Growth Parameter Determining Rgr and M Psupporting

confidence: 80%

A Generalized Linear Model to Predict the Growth of Potted Seedlings of Satsuma Mandarin (<i>Citrus unshiu</i> Marcow.) under Different Initial Plant Conditions, Environmental Conditions, and Pot Size

et al. 2018

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To predict the seasonal vegetative growth of potted seedlings of Satsuma mandarin, the effects of initial plant conditions (age, shoot pruning), environment (greenhouse, greenhouse + shading, open-field culture), and pot size on growth were researched for 1.5-2.5 years. The growth pattern was evaluated using a curve fitting with the 4-parameter logistic (4L) model, biomass allocation, and classical (interval) growth analysis, and a generalized linear model analysis based on thermal time (tt). Growth delays from shoot pruning were confirmed by growth trajectories with the 4L model based on tt. Plant growth was positively affected by enlarging the pot size (from 20-L to 45-L), while shading significantly suppressed the growth of 45-L potted Satsuma mandarin seedlings in the greenhouse. In the growth analysis, the relative growth rate was not always determined by the net assimilation rate (NAR), which included both shoot-pruning and pot size effects. To predict the plant mass of Satsuma mandarin seedlings (M P ), we proposed several generalized linear models using a log link function assuming that M P followed a Gamma-distribution. The best model to predict M P was selected based on Akaike information criterion (AIC) values, and contained explanatory variables for initial plant biomass, NAR, specific leaf area (SLA), leaf mass ratio (LMR), pot size, and tt. Some simpler models excluding NAR, but including SLA and/or LMR as explanatory variables, were more useful than a model lacking growth analysis parameters (NAR, SLA, and LMR).

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Section: Growth Parameter Determining Rgr and M Psupporting

confidence: 80%

A Generalized Linear Model to Predict the Growth of Potted Seedlings of Satsuma Mandarin (<i>Citrus unshiu</i> Marcow.) under Different Initial Plant Conditions, Environmental Conditions, and Pot Size

et al. 2018

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“…Thus, growth differences of fruiting branches in 'Shiranuhi' mandarin tree may be closely linked to differences in grafting number times, sink strength, hormone balance and canopy position. Tree grow on the citrus rootstocks was higher in order to the 'Rough lemon', 'Swingle citrumelo', trifoliate orange and dwarf 'Hiryu' for different of hydraulic conductance (Iwasaki et al, 2011;Syvertsen, 1981). Further studies are required to evaluate the connection between branch growth and hydraulic conductance by number of grafting and canopy location.…”

Section: Discussionmentioning

confidence: 99%

Differences in Fruit Quality and Plant Growth of ‘Shiranuhi’ Mandarin Trees, Planted and Top-Grafted Stock

Moon¹

2014

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Differences in fruit characteristics (soluble solids content, acidity and fruit weight) and growth properties of fruiting branches in both planted and top-grafted stock for 'Shiranuhi' mandarin [(C. unshiu x C. sinensis) x C. reticulate] trees were determined when fruit was harvested. It was found that fruiting branch length, leaves and soluble solids contents tended to be higher in the planted stock compared with the top-grafted trees. Fruit diameter, fruit weight, stem end protrusion, pulp weight and pulp thickness were larger in the planted than top-grafted stock. However, titratable acidity was higher in the top-grafted than in the planted stock. These results suggest that planted stock should be cultivated as part of crop management for improvement of fruit quality and plant growth in 'Shiranuhi' mandarin trees.

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“…Karakter tersebut berpengaruh terhadap konduktansi hidrolik (Tombesi et al, 2010;Zach et al, 2010). Hasil penelitian menunjukkan bahwa konduktansi hidrolik berkorelasi positif terhadap vigor tanaman (Iwasaki et al, 2011).…”

Section: Abstrakunclassified

Anatomical Characteristics of Roots and Stems of Citrus Rootstock as Parameter for Estimating of Rimau Gerga Lebong (RGL) Mandarin Citrus Vigor

et al. 2020

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Vigor tanaman jeruk dipengaruhi oleh batang bawah yang digunakan. Penelitian bertujuan untuk mendapatkan korelasi antara karakter anatomi akar dan batang terhadap tinggi tanaman jeruk batang bawah dan mendapatkan variabel prediksi vigor tanaman jeruk keprok RGL. Penelitian dilaksanakan di KP-Tlekung, Balitjestro mulai bulan Juni 2019 – Maret 2020. Penelitian menggunakan batang bawah JC, Citrumelo dan Kanci dengan batang atas jeruk keprok RGL. Percobaan dilaksanakan dengan rancangan acak kelompok, lima kali ulangan. Hasil penelitian menunjukkan bahwa pertumbuhan JC dan Citrumelo sama dan lebih tinggi dibandingkan Kanci. Ketiga jenis batang bawah memiliki karakter anatomi yang berbeda. Hasil analisis korelasi menunjukkan bahwa karakter persentase dan luas pembuluh xylem baik pada akar maupun batang berkorelasi positif terhadap tinggi tanaman batang bawah. Batang bawah kanci memiliki persentase dan luas pembuluh paling kecil. Batang bawah JC memiliki persentase xylem dan rata-rata luas pembuluh xylem tertinggi baik pada irisan melintang akar maupun batang. Batang bawah Citrumelo memiliki densitas pembuluh xylem/mm2 tertinggi. Hasil evaluasi pada tanaman jeruk keprok RGL umur tiga tahun menunjukkan bahwa batang bawah JC dan Citrumelo menyebabkan tinggi tanaman dan volume kanopi lebih tinggi dibandingkan pada batang bawah Kanci. Karakter persentase dan luas pembuluh xylem dapat digunakan sebagai parameter penduga vigor tanaman jeruk RGL. Kata kunci: Jeruk batang bawah, jeruk keprok RGL, karakter anatomi, xylem, vigor

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Development of Tree Vigor Prediction Method at an Early Stage Based on Stem Hydraulic Conductance of Seedlings in Citrus Rootstocks

Cited by 7 publications

References 18 publications

A Generalized Linear Model to Predict the Growth of Potted Seedlings of Satsuma Mandarin (<i>Citrus unshiu</i> Marcow.) under Different Initial Plant Conditions, Environmental Conditions, and Pot Size

A Generalized Linear Model to Predict the Growth of Potted Seedlings of Satsuma Mandarin (<i>Citrus unshiu</i> Marcow.) under Different Initial Plant Conditions, Environmental Conditions, and Pot Size

Differences in Fruit Quality and Plant Growth of ‘Shiranuhi’ Mandarin Trees, Planted and Top-Grafted Stock

Anatomical Characteristics of Roots and Stems of Citrus Rootstock as Parameter for Estimating of Rimau Gerga Lebong (RGL) Mandarin Citrus Vigor

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