Root System Development Including Root Branching in Cuttings of Cassava with Reference to Shoot Growth and Tuber Bulking

Izumi, Yoshiharu; Yuliadi, Erwin; Sunyoto,; Iijima, Morio

doi:10.1626/pps.2.267

Cited by 17 publications

(30 citation statements)

References 20 publications

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“…5, 2002 1999), the total root length of cassava plants grown in a 30 L container was 324m at 60 DAP, which is quite comparable with that observed in this study, and decreased drastically thereafter with bulking of storage root. We previously reported that the root length decreased by decay and decomposition with bulking of storage root (Izumi et al, 1999). Thus, in this study, the maximum in the total root length at 60 DAP was caused by the delay of bulking of storage root.…”

Section: Discussionsupporting

confidence: 54%

“…This trend was clearly reflected in the specific root length. Although "storage root," defined as an axile root thicker than O.Olm in diameter (Pellet and El-Sharkawy, 1993;Izumi et al, 1999), was not observed even at 90 DAP, thickening of roots commenced between 60 and 90 DAP. In a previous study conducted at Sumatra Island in Indonesia (Izumi et al, Plant Production Science Vol.…”

Section: Discussionmentioning

confidence: 96%

“…In a previous study (Izumi et al, 1999), we researched Knowledge concerning the rooting habits of this crop the root system development of cassava using containers is undoubtedly important to understand well how this which allowed three-dimensional root growth to trace crop acquires water and nutrients or becomes drought total proliferation and horizontal extension of roots. On resistant.…”

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confidence: 99%

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Fractal and Multifractal Analysis of Cassava Root System Grown by the Root-Box Method

Izumi

Iijima

2002

Plant Production Science

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The root system development and its localized distribution were examined using cassava plants grown in narrow root boxes of appropriate sizes which were adjusted to the root growth. Analyses based on fractal geometry were applied in addition to measurements of the weight and length of the root systems to evaluate the root distribution quantitatively. The root system distribution was converted to a digitized image, and the fractal dimension was calculated by the box-counting method (Dbox) for the whole root system and different positions in the soil. Furthermore, 1000 random measurements for local fractal dimension by the mass-radius method (Dtocat) were conducted per root system, and the multifractal spectrum was analyzed. The total root weight increased until 90 days after planting (DAP), whereas the total length ceased to increase at 60 DAP. Neither apparent bulking of storage root nor decrease in root length was observed during the experimental period. The potential rooting habit of cassava was two-dimensionally exhibited under a uniform soil environment in the boxes. The complexity in root distribution as a whole root system shown by the global D (Dbox) was almost constant. However, both the trends in positional Dbox difference and multifractal analysis showed that the root distribution was localized and heterogeneity in the localization changed with root system development. The root system of cassava grown in the boxes can be characterized as an abundant but uneven root distribution with a highly advanced branching pattern by large global D and kurtosis of the multifractal spectra.

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Section: Discussionsupporting

confidence: 54%

Section: Discussionmentioning

confidence: 96%

mentioning

confidence: 99%

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Fractal and Multifractal Analysis of Cassava Root System Grown by the Root-Box Method

Izumi

Iijima

2002

Plant Production Science

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“…Early work describing anatomical changes associated with storage root formation in cassava did not mention LRs (Indira and Kurian, 1977). Related work examined the branching pattern of LRs and reported that LRs increased root surface area and compensated for the decrease in the main root length (Izumi et al, 1999). It was concluded that roots with a well-developed branching pattern likely absorbed water and essential nutrients for storage root growth better.…”

Section: Root System Architecture In Root and Tuber Cropsmentioning

confidence: 99%

Root System Architecture and Abiotic Stress Tolerance: Current Knowledge in Root and Tuber Crops

2016

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The challenge to produce more food for a rising global population on diminishing agricultural land is complicated by the effects of climate change on agricultural productivity. Although great progress has been made in crop improvement, so far most efforts have targeted above-ground traits. Roots are essential for plant adaptation and productivity, but are less studied due to the difficulty of observing them during the plant life cycle. Root system architecture (RSA), made up of structural features like root length, spread, number, and length of lateral roots, among others, exhibits great plasticity in response to environmental changes, and could be critical to developing crops with more efficient roots. Much of the research on root traits has thus far focused on the most common cereal crops and model plants. As cereal yields have reached their yield potential in some regions, understanding their root system may help overcome these plateaus. However, root and tuber crops (RTCs) such as potato, sweetpotato, cassava, and yam may hold more potential for providing food security in the future, and knowledge of their root system additionally focuses directly on the edible portion. Root-trait modeling for multiple stress scenarios, together with high-throughput phenotyping and genotyping techniques, robust databases, and data analytical pipelines, may provide a valuable base for a truly inclusive ‘green revolution.’ In the current review, we discuss RSA with special reference to RTCs, and how knowledge on genetics of RSA can be manipulated to improve their tolerance to abiotic stresses.

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“…This can be considered to be in compensation for the vertical restriction of the rooting zone. Although the horizontal root distribution in cassava has been reported extensively (Maduakor, 1993;Tscherning et al, 1995;Muhr et al, 1995;Izumi et al, 1999), none of study traced the furthest root tips from the plants. In our study, we found that adventitious root extension depended on the cassava planting density: in comparison with higher-density treatments (P1, 2, and 3), the roots in P4 (50 % density) and P5 (25% density) extended 30 and 80% further from the plant base, respectively.…”

Section: Cassava Root Extensionmentioning

confidence: 99%

Cassava-Based Intercropping Systems on Sumatra Island in Indonesia: Productivity, Soil Erosion, and Rooting Zone

Iijima

Izumi

Yuliadi

et al. 2004

Plant Production Science

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Root System Development Including Root Branching in Cuttings of Cassava with Reference to Shoot Growth and Tuber Bulking

Cited by 17 publications

References 20 publications

Fractal and Multifractal Analysis of Cassava Root System Grown by the Root-Box Method

Fractal and Multifractal Analysis of Cassava Root System Grown by the Root-Box Method

Root System Architecture and Abiotic Stress Tolerance: Current Knowledge in Root and Tuber Crops

Cassava-Based Intercropping Systems on Sumatra Island in Indonesia: Productivity, Soil Erosion, and Rooting Zone

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