Sugarcane regrowth is dependent on root system size: an approach using young plants grown in nutrient solution

Pissolato, Maria D.; Cruz, Larissa Prado da; Silveira, Neidiquele M.; Machado, Eduardo Caruso; Ribeiro, Rafael V.

doi:10.1590/1678-4499.20210039

Cited by 10 publications

(7 citation statements)

References 19 publications

(18 reference statements)

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“…This has been observed in other crops as well. For instance, sugarcane plants with the entire root system intact have been reported to produce photoassimilates earlier, expediting regrowth and leading to more accumulation of biomass than in plants with 50% of the root system (Pissolato et al, 2021). The replanted crop requires more time to develop roots and leaves to photosynthesize.…”

Section: Effect Of Ratooning On Vine Productionmentioning

confidence: 99%

Ratooning increases production of sweetpotato seed vines multiplied in insect-proof net tunnels in Tanzania

et al. 2023

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Summary Insect-proof net tunnels can help reduce virus infection of clean virus-tested sweetpotato seed produced by decentralized seed producers. However, optimal management is required to maintain both quality and quantity of seed produced. This study investigated the effect of the ratoon cropping technique on vine production in net tunnels and open fields. Virus-tested planting material of two varieties, Kabode and Mataya, were grown in net tunnels and open fields. Each variety had 80 plants per plot, with 40 following the ratooning technique and 40 a replanting technique. The ratooned crop was harvested six times, comprising the initial harvest and five regrowths. This covered 14 months representing six generations of vine production. The number of vines, number of nodes per vine, and vine length were recorded. The number of plants showing virus symptoms was also recorded. The ratoon cropping technique produced more vines compared with the replanting technique in both net tunnels and open fields. Cv. Kabode produced more vines in open fields compared with net tunnels regardless of cropping technique. On the other hand, cv. Mataya produced relatively equal numbers of vines in net tunnels and open fields. Despite ratooning leading to more vine production compared with replanting, the technique led to higher virus incidences on plants grown in the open. This also varied with variety with the highest virus disease incidences being recorded on cv. Mataya. We recommend the ratoon cropping technique for sweetpotato vine production in net tunnels. Replanting technique should be adopted for vine production in the open fields because it acts as a key control strategy for virus infections even for susceptible varieties.

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Section: Effect Of Ratooning On Vine Productionmentioning

confidence: 99%

Ratooning increases production of sweetpotato seed vines multiplied in insect-proof net tunnels in Tanzania

et al. 2023

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“…A series of investigations have been conducted on the factors that affect the longevity of ratoon cane. The genotype, cultivation management, and environment contribute to the ratoon crop in descending order [4,11]. The ratoon crop yields decline typically with age [39].…”

Section: Main Factors Influencing Longevity and Productivity Of Ratoon Sugarcanementioning

confidence: 99%

“…Previous data also suggest that the non-optimum germination or sprouting temperatures, too low or too high, may be a factor for yield decline in ratoon cane [3]. Compared with plant cane, ratoon plants have an established, and strong root system, representing the unique skeleton of carbon and energy source for the initial plant development [4]. The root system, which is essential for regrowth of sugarcane and the ratoon vigor of each cycle [4], can be used for water transport to leaves during the period of photosynthesis, in which photosynthetic products are accumulated and in turn promote a rapid leaf expansion and plant growth during the early growing stage.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with plant cane, ratoon plants have an established, and strong root system, representing the unique skeleton of carbon and energy source for the initial plant development [4]. The root system, which is essential for regrowth of sugarcane and the ratoon vigor of each cycle [4], can be used for water transport to leaves during the period of photosynthesis, in which photosynthetic products are accumulated and in turn promote a rapid leaf expansion and plant growth during the early growing stage. Therefore, ratoon plants have more effective accumulated temperature and longer effective growth period, resulting in more sugar accumulation and earlier technical maturity.…”

Section: Introductionmentioning

confidence: 99%

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Sugarcane Ratooning Ability: Research Status, Shortcomings, and Prospects

Wang

et al. 2021

Biology

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Sugarcane is an important sugar crop and it can be subjected to ratooning for several years. The advantages of ratooning include quality improvement, efficiency enhancement, and reduced costs and energy use. The genotype, environment, cultivation management, and harvesting technology affect the productivity and longevity of ratoon cane, with the genetic basis being the most critical factor. However, the majority of research has been focused on only limited genotypes, and a few studies have evaluated up to 100 sugarcane germplasm resources. They mainly focus on the comparison among different genotypes or among plant cane, different selection strategies for the first and second ratoon crops, together with screening indicators for the selection of stronger ratooning ability. In this paper, previous studies are reviewed in order to analyze the importance of sugarcane ratooning, the indicative traits used to evaluate ratooning ability, the major factors influencing the productivity and longevity of ratooning, the genetic basis of variation in ratooning ability, and the underlying mechanisms. Furthermore, the shortcomings of the existing research on sugarcane ratooning are highlighted. We then discuss the focus of future ratoon sugarcane research and the technical methods that will shorten the selection cycle and increase the genetic gain of ratooning ability, particularly the development of linked markers. This review is expected to provide a reference for understanding the mechanisms underlying the formation of ratooning ability and for breeding sugarcane varieties with a strong ratooning ability.

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“…This has been observed in other crops as well. For instance, sugarcane plants with the entire root system intact have been reported to produce photo-assimilates earlier, expediting regrowth and leading to more accumulation of biomass than in plants with 50% of the root system (Pissolato et al, 2021). The replanted crop requires more time to develop roots and leaves to photosynthesize.…”

Section: Effect Of Ratooning On Vine Productionmentioning

confidence: 99%

Degeneration of sweetpotato seed in Tanzania: can cleaned-up, virus-tested seed help?

Ogero

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Low yields caused by poor phytosanitary quality of seed vines are a major challenge to sweetpotato farming in Tanzania. Poor seed quality is largely caused by viruses, especially the co-infection of sweet potato feathery mottle virus (SPFMV) and sweet potato chlorotic stunt virus (SPCSV). These two viruses are the most devastating ones in East Africa and when combined cause the sweetpotato virus disease (SPVD), often leading to 56 − 100% yield losses. Being vegetatively propagated, sweetpotato accumulates viruses across generations. The use of virus-infected material obtained from the previous crop is the most common source of viruses. The accumulation of viruses in the propagating material leads to progressive yield loss and is called seed degeneration. Use of clean seed disseminated through a formal system is one of the options to address this. However, clean seed can get infected once in the field and it is not known how it will perform following several seasons of on-farm propagation. Moreover, successful use of clean seed requires an understanding of the current practices that farmers use when sourcing sweetpotato seed. This research started by assessing the performance of clean seed and farmer-sourced seed of varieties that are susceptible or relatively resistant to viruses grown in environments with high or low virus pressure. The results showed that starting propagation with clean seed slows down degeneration especially in susceptible varieties grown in high-viruspressure environments. The findings also showed yield stability for farmer-sourced material of virus resistant varieties. The yield stability for farmer-sourced material of the relatively virus-resistant variety illustrates why farmers recycle planting material. The findings also showed that regular replacement by clean seed is especially economic in areas with high virus pressure and for susceptible varieties. In addition, it is important to consider cultivar resistance and agroecology when promoting adoption of clean seed.To understand farmers' experiences with degeneration a 'Small-N' survey was conducted with 37 respondents. We found that female farmers reported degeneration more frequent than male farmers. The main action to address degeneration was to acquire a new variety, mostly from close sources in the farmers' social networks (friends, neighbors and relatives). Planting material was mostly acquired and shared as gifts. Farm seed recycling still dominates. These networks will continue to play an important role in sweetpotato seed flows and therefore it is important to devise innovative ways of linking them with the formal seed system for access to clean seed and improved varieties.Clean seed is not immune to viruses and can get infected once planted in the open fields. We investigated the efficiency of insect-proof net tunnels in reducing degeneration of clean seed at seed producer level. Results from a 21-month experiment showed that insect-proof net tunnels can prevent infection in an area with high virus pressure for up to 20 months....

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Sugarcane regrowth is dependent on root system size: an approach using young plants grown in nutrient solution

Cited by 10 publications

References 19 publications

Ratooning increases production of sweetpotato seed vines multiplied in insect-proof net tunnels in Tanzania

Ratooning increases production of sweetpotato seed vines multiplied in insect-proof net tunnels in Tanzania

Sugarcane Ratooning Ability: Research Status, Shortcomings, and Prospects

Degeneration of sweetpotato seed in Tanzania: can cleaned-up, virus-tested seed help?

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