Canopy Structure and Photosynthetic Performance of Irrigated Cassava Genotypes Growing in Different Seasons in a Tropical Savanna Climate

Santanoo, Supranee; Vongcharoen, Kochaphan; Banterng, Poramate; Vorasoot, Nimitr; Jogloy, Sanun; Roytrakul, Sittiruk; Theerakulpisut, Piyada

doi:10.3390/agronomy10122018

Cited by 11 publications

(8 citation statements)

References 82 publications

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“…The response of leaves in the upper layer, which has high photosynthetic activity, to light intensity was compared with previous reports. While the A max in this study was 21.3-25.1 µmol m −2 s −1 , Santanoo et al [18] and Mahakosee et al [19] reported it to be approximately 30 µmol m −2 s −1 . PAR at a light saturation of A was also reported to be about 1500 µmol m −2 s −1 , higher than the 1200 µmol m −2 s −1 reported in this study.…”

Section: Discussioncontrasting

confidence: 64%

“…PAR at a light saturation of A was also reported to be about 1500 µmol m −2 s −1 , higher than the 1200 µmol m −2 s −1 reported in this study. One of the reasons for this is that Kagoshima, where this experiment was conducted, is at a higher latitude and receives less solar radiation than Khon Kaen, Thailand, where Santanoo et al [18] conducted their experiments. The result of light curve on different canopy height levels showed high A max on the upper layer and photosynthesis was conducted under high solar radiation.…”

Section: Discussionmentioning

confidence: 99%

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The Productivity of Cassava (Manihot esculenta Crantz) in Kagoshima, Japan, Which Belongs to the Temperate Zone

et al. 2021

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The cultivation period of cassava in Kagoshima, Japan, which belongs to the temperate zone, is limited by the low temperature in winter. To maximize productivity under this limited period, investigations were conducted on the gas exchange rate and production structure relating to light utilization in a plant community of cassava grown under different nitrogen fertilization conditions. Fertilization either at planting or three months after planting significantly increased stomatal conductance in the upper canopy and root dry weight compared to the control. In addition, the dry matter distribution to stem and root dry matter rate of initial fertilization treatment were significantly higher, and the dry matter distribution to root of the latter fertilization treatment tended to be higher than that of the control. However, light transmittance at 80 cm below the top of the canopy was almost the same as that at the ground surface, which was a common tendency among the treatments. In conclusion, it was revealed that the effects of fertilization on yield were mainly the increase in the gas exchange rate of individual leaves and the change of dry matter distribution rather than an improvement in light transmittance.

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Section: Discussioncontrasting

confidence: 64%

Section: Discussionmentioning

confidence: 99%

The Productivity of Cassava (Manihot esculenta Crantz) in Kagoshima, Japan, Which Belongs to the Temperate Zone

et al. 2021

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“…Interestingly, it was observed that P N of HN and KU50 varied across the developmental stages, exhibiting a V-shaped pattern ( Figure 1A ). This pattern was also observed in other cassava varieties, including Rayong 9 ( Vongcharoen et al, 2018 ; Santanoo et al, 2020 ), Rayong 11, CMR38-125-77 ( Santanoo et al, 2020 ), MBra 110, MMal 48, MCol 22, and MPan 51 ( El-Sharkawy and De Tafur, 2010 ), indicating a characteristic of cassava species. The results indicate a strong interconnection between photosynthesis capacity and intracellular carbon metabolism and allocation.…”

Section: Discussionsupporting

confidence: 59%

Effective Metabolic Carbon Utilization and Shoot-to-Root Partitioning Modulate Distinctive Yield in High Yielding Cassava Variety

et al. 2022

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Increasing cassava production could mitigate one of the global food insecurity challenges by providing a sustainable food source. To improve the yield potential, physiological strategies (i.e., the photosynthetic efficiency, source-to-sink carbon partitioning, and intracellular carbon metabolism) can be applied in breeding to screen for superior genotypes. However, the influences of source-to-sink carbon partitioning and carbon metabolism on the storage root development of cassava are relatively little understood. We hypothesized that carbon partitioning and utilization vary modulating the distinctive storage root yields of high and low-yielding cassava varieties, represented in this study by varieties Kasetsart 50 (KU50) and Hanatee (HN), respectively. Plant growth, photosynthesis measurements, soluble sugars, and starch contents of individual tissues were analyzed at different developmental stages. Also, the diurnal patterns of starch accumulation and degradation in leaves were investigated through iodine staining. Despite a comparable photosynthetic rate, KU50 grew better and yielded greater storage roots than HN. Interestingly, both varieties differed in their carbon partitioning strategies. KU50 had a high photosynthetic capacity and was better efficient in converting photoassimilates to carbon substrates and allocating them to sink organs for their growth. In contrast, HN utilized the photoassimilates at a high metabolic cost, in terms of respiration, and inefficiently allocated carbon to stems rather than storage roots. These results highlighted that carbon assimilation and allocation are genetic potential characteristics of individual varieties, which in effect determine plant growth and storage root yield of cassava. The knowledge gained from this study sheds light on potential strategies for developing new high-yielding genotypes in cassava breeding programs.

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“…Phoncharoen et al [44] also reported that the genotype Rayong 9 had high values of storage root yield and harvest index due to its high capability of partitioning photosynthates to sink. Santanoo et al [45] indicated that the genotype Rayong 9 grown under irrigated conditions had a high net photosynthesis rate. The positive correlation between leaf net photosynthetic rate and storage root yield has been reported by El-Sharkawy [46,47].…”

Section: Performances Of the Four Cassava Genotypesmentioning

confidence: 99%

Identifying Suitable Genotypes for Different Cassava Production Environments—A Modeling Approach

et al. 2021

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Crop simulation models can be used to identify appropriate genotypes and growing environments for improving cassava yield. The aim of this study was to determine the best genotypes for different cassava production environments using the cropping system model (CSM)–MANIHOT–Cassava. Data from cassava experiments that were conducted from 2009–2011 and 2014–2015 at Khon Kaen, Thailand, were used to evaluate the model. Simulations were then conducted for different scenarios using four cassava genotypes (Kasetsart 50, Rayong 9, Rayong 11, and CMR38–125–77), twelve planting dates (at monthly intervals starting in January and ending in December), and ten locations in Thailand under fully irrigated and rainfed conditions using 30 years of historical weather data. Model evaluation with the experimental data for total biomass and storage root yield indicated that the model classified well for relative productivity among different planting dates. The model indicated that growing cassava under irrigated conditions generally produced higher biomass and storage root yield than under rainfed conditions. The cassava genotype CMR38–125–77 was identified for high biomass, while the genotype Rayong 9 was identified as a good genetic resource for high yield. The December planting date resulted in the highest biomass for all locations, while the February planting date produced the highest storage root yield for almost all locations. The results from this study suggest that the CSM–MANIHOT–Cassava model can assist in determining suitable genotypes for different cassava production environments for Thailand, and that this approach could be applicable to other cassava growing areas.

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Canopy Structure and Photosynthetic Performance of Irrigated Cassava Genotypes Growing in Different Seasons in a Tropical Savanna Climate

Cited by 11 publications

References 82 publications

The Productivity of Cassava (Manihot esculenta Crantz) in Kagoshima, Japan, Which Belongs to the Temperate Zone

The Productivity of Cassava (Manihot esculenta Crantz) in Kagoshima, Japan, Which Belongs to the Temperate Zone

Effective Metabolic Carbon Utilization and Shoot-to-Root Partitioning Modulate Distinctive Yield in High Yielding Cassava Variety

Identifying Suitable Genotypes for Different Cassava Production Environments—A Modeling Approach

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