Harvest management affects biomass composition responses of C4 perennial bioenergy grasses in the humid subtropical <scp>USA</scp>

Na, Chae‐In; Fedenko, Jeffrey R.; Sollenberger, Lynn E.; Erickson, John E.

doi:10.1111/gcbb.12319

Cited by 15 publications

(7 citation statements)

References 45 publications

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“…Table 5 summarizes the tissue composition of energy cane stalks and leaves collected at final harvest of ratoons (Trial 1) and plant cane (Trial 2). The lignin content of stalks and leaves ranged from 17 to 23% which was similar to the lignin content reported for energy canes (da Silva, 2017; Fedenko et al., 2013; Kim & Day, 2011; Na, Fedenko, Sollenberger, & Erickson, 2016a). Cellulose content in stalks and leaves were generally similar (35−36%), but was slightly lower in stalks (29−31%) in second ratoon phase.…”

Section: Resultssupporting

confidence: 81%

Agronomic performance of the lignocellulosic feedstock crop energy cane in the Texas Rolling Plains

Pokhrel

Rajan

Jifon³

et al. 2020

Agronomy Journal

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Feedstock genetics and environment are important factors determining biomass yield of biofuel crops. Field studies were conducted to evaluate agronomic performance of four energy cane (Saccharum spp. hybrid) genotypes (TUS11-62, TUS11-58, TCP10-4928, and Ho 02-113) in the Texas Rolling Plains. In the first study, cane billets were planted in 2015 and data were collected from first (2016) and second (2017) ratoons. A second study was planted in 2016 and data were collected the same year from plant cane. Data collected include biomass, stalk height, stalk population, leaf area index (LAI), and normalized difference vegetation index (NDVI). Biomass yield of ratoons was not significantly different (p > .05) among genotypes. However, TUS11-58 had the highest plant cane yield. The average biomass yield of plant cane, first, and second ratoons were 20.2, 40.4, and 26.4 t ha −1 respectively. Longer growing period of ratoon (∼8 mo) compared to plant cane (∼5.5 mo) increased biomass. However, low temperatures (−14 to −16 • C) during the dormant phase resulted in lower yield of the second ratoon. Among genotypes, TUS11-62 had taller stalks, but was cold sensitive. Genotype TCP10-4928 had higher stalk population and LAI. An exponential relationship was observed between LAI and NDVI (R 2 = .67). Overall, there were differences in growth characteristics of energy cane genotypes, however biomass yield was similar in the ratoon phase. The results of this study showed that low temperature tolerance and growing season duration are key factors in determining biomass yield in higher latitude regions such as the Texas Rolling Plains.

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Section: Resultssupporting

confidence: 81%

Agronomic performance of the lignocellulosic feedstock crop energy cane in the Texas Rolling Plains

Pokhrel

Rajan

Jifon³

et al. 2020

Agronomy Journal

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“…Apart from genetics, the nutritional qualities of forages are influenced by many factors including the climate [76], soil nutrition [77], season and grazing pressure [78], management [65,79,80] and fertilizer application [81]. Consequently, great care should be taken to determine the optimum time when planning to harvest or graze Napier grass in order to maximize both yield and nutritional qualities [82].…”

Section: Nutritional Qualitiesmentioning

confidence: 99%

Opportunities for Napier Grass (Pennisetum purpureum) Improvement Using Molecular Genetics

Negawo¹,

Teshome²,

Kumar

et al. 2017

Agronomy

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Napier grass (Pennisetum purpureum Schumach.) is a fast-growing perennial grass native to Sub-Saharan Africa that is widely grown across the tropical and subtropical regions of the world. It is a multipurpose forage crop, primarily used to feed cattle in cut and carry feeding systems. Characterization and diversity studies on a small collection of Napier grasses have identified a moderate level of genetic variation and highlighted the availability of some good agronomic traits, particularly high biomass production, as a forage crop. However, very little information exists on precise phenotyping, genotyping and the application of molecular technologies to Napier grass improvement using modern genomic tools which have been applied in advancing the selection and breeding of important food crops. In this review paper, existing information on genetic resources, molecular diversity, yield and nutritional quality of Napier grass will be discussed. Recent findings on characterizing disease resistance and abiotic stress (drought) tolerance will also be highlighted. Finally, opportunities and future prospects for better conservation and use arising from the application of modern genomic tools in Napier grass phenotyping and genotyping will be discussed.

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“…A recent research on the effects of harvest timing and frequency on biomass nutrient and cell wall composition of elephant grass (Pennisetum purpureum) and energy cane (Saccharum spp.) hybrid exhibited that a single harvest to after first freeze had positive effects on cell wall constituent properties while multiple harvests per year were not appropriate for optimal feedstock composition (Na et al 2016).…”

Section: Improvements In Bioenergy Crops Through Breeding Marker-assmentioning

confidence: 99%

Engineering grass biomass for sustainable and enhanced bioethanol production

Mohapatra

Mishra

Bhalla

et al. 2019

Planta

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Main conclusion Bioethanol from lignocellulosic biomass is a promising step for the future energy requirements. Grass is a potential lignocellulosic biomass which can be utilised for biorefinery-based bioethanol production. Grass biomass is a suitable feedstock for bioethanol production due to its all the year around production, requirement of less fertile land and noninterference with food system. However, the processes involved, i.e. pretreatment, enzymatic hydrolysis and fermentation for bioethanol production from grass biomass, are both time consuming and costly. Developing the grass biomass in planta for enhanced bioethanol production is a promising step for maximum utilisation of this valuable feedstock and, thus, is the focus of the present review. Modern breeding techniques and transgenic processes are attractive methods which can be utilised for development of the feedstock. However, the outcomes are not always predictable and the time period required for obtaining a robust variety is generation dependent. Sophisticated genome editing technologies such as synthetic genetic circuits (SGC) or clustered regularly interspaced short palindromic repeats (CRISPR) systems are advantageous for induction of desired traits/heritable mutations in a foreseeable genome location in the 1st mutant generation. Although, its application in grass biomass for bioethanol is limited, these sophisticated techniques are anticipated to exhibit more flexibility in engineering the expression pattern for qualitative and qualitative traits. Nevertheless, the fundamentals rendered by the genetics of the transgenic crops will remain the basis of such developments for obtaining biorefinery-based bioethanol concepts from grass biomass.

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Harvest management affects biomass composition responses of C4 perennial bioenergy grasses in the humid subtropical USA

Cited by 15 publications

References 45 publications

Agronomic performance of the lignocellulosic feedstock crop energy cane in the Texas Rolling Plains

Agronomic performance of the lignocellulosic feedstock crop energy cane in the Texas Rolling Plains

Opportunities for Napier Grass (Pennisetum purpureum) Improvement Using Molecular Genetics

Engineering grass biomass for sustainable and enhanced bioethanol production

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