Peranan rizobakteri dan fungi mikoriza arbuskular dalam proses fotosintesis dan produksi gula sorgum manis (Sorghum bicolor L. Moench) Role of rhizobacteria and arbuscular mycorrhizal fungi in increasing photosynthesis process and sugar production of sweet sorghum (Sorghum bicolor L. Moench)
DOI:
https://doi.org/10.22302/iribb.jur.mp.v83i1.13Keywords:
CO2 gas exchange, chlorophyll content, nutrient uptake and sugar contentAbstract
Abstract
Dual inoculation effects of rhizobacteria and
AMF as well as the addition of chemical fertilizers
on photosynthesis were studied by analyzing
process of CO2 gas exchange, chlorophyll content,
nutrient uptake, sugar content and growth of sweet
sorghum. AMF inoculation as a single culture
increased carbon assimilation, stomatal conductance,
intercellular CO2 concentration, phosphorus
content, chlorophyll content, sugar content, plant
height, shoot weight and mycorrhizal colonization.
Interaction of AMF and rhizobacteria increased
sugar content of sweet sorghum stems and
potassium content of sweet sorghum leaves,
whereas its interaction with chemical fertilizers
significantly increased chlorophyll content, sugar
content and mycorrhizal colonization of sorghum
plant roots. Interaction of AMF, rhizobacteria and
chemical fertilizers increased sugar content, root
weight and mycorrhizal colonization. The use of
AMF solely or its interaction with rhizobacteria
and chemical fertilizers had a great potential in
improving photosynthesis process of sweet
sorghum. The process is associated with increasing
crop productivity, such as sugar content of
sorghum which is potential as a source of
renewable energy.
Abstrak
Pengaruh inokulasi ganda rizobakteri dan
FMA dengan penambahan pupuk kimia dipelajari
dengan cara menganalisis proses pertukaran gas
CO2, kandungan klorofil, kandungan hara dan gula,
pertumbuhan dan produktivitas sorgum manis.
Inokulasi FMA sebagai kultur tunggal dapat
meningkatkan asimilasi karbon, konduktansi
stomata, konsentrasi CO2 interselular, kandungan
fosfor, kandungan klorofil, kandungan gula, tinggi
tanaman, berat batang dan derajat kolonisasi
mikoriza. Interaksi antara rizobakteri dan FMA
dapat meningkatkan kandungan gula batang dan
kalium daun sorgum manis, sedangkan interaksinya
dengan pupuk kimia dapat meningkatkan kandungan
klorofil dan gula serta derajat kolonisasi
mikoriza pada perakaran sorgum manis. Sementara
itu, interaksi FMA, rizobakteri dan pupuk kimia
dapat meningkatkan kandungan gula batang, berat
akar dan derajat kolonisasi mikoriza pada perakaran
sorgum manis. Penggunaan FMA baik sendiri
maupun interaksinya dengan rizobakteri dan pupuk
kimia memiliki potensi besar dalam meningkatkan
proses fotosintesis sorgum manis. Proses tersebut
berkaitan dengan peningkatan produktivitas sorgum
manis dalam hal ini kandungan gula sorgum manis
yang berpotensi sebagai sumber energi terbarukan.
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