Agronomic characterization of sweet potato accessions

The agronomic characterization of a genotype set is one of the basic steps to start a breeding program, as action strategies to search for new cultivars are defined through the knowledge of these characteristics. Thus, the aim of this study was to rescue and assess agronomic performance in accessions collected in traditional communities. Sweet potatoes were collected among “quilombos”, indigenous villages, native populations and small farmers from Vale do Ribeira. The study was conducted at UNESP, Registro Campus, from February/2013 to August/2014. The experiment was set in a randomized blocks design with 95 accessions, two commercial cultivars, Brazlândia Branca and Brazlândia Roxa (controls), with three repetitions. Total commercial roots production, percentage of commercial roots production, total roots dry matter production, roots dry matter percentage, fresh branches production, total dry matter production in branches and dry matter percentage in branches were assessed. Accessions VR13-62, VR13-61, VR13-44, VR13-11 and VR13-14 demonstrated characteristics of roots for consumption and VR13-11 and VR13-14 for industry consumption due to the high dry matter percentage obtained per hectare; VR13-35, VR13-87 and VR13-22 are adequate for animal feed purposes. VR13-11, VR13-22 and VR13-58 accessions can be used for human and animal consumption; VR13-48 was suitable for home and industry consumption; and VR13-4 and VR13-31 was suitable for animal feed and industry consumption.

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Evaluation of Nutritional Quality and Adaptation of Several Native Plant Species of Kuwait to the Farming System as Potential Livestock Feed

Journal of Agriculture and Horticulture Research ◽

10.33140/jahr.04.01.01 ◽

2021 ◽

Vol 4 (1) ◽

Keyword(s):

Plant Species ◽

Dry Matter ◽

Animal Feed ◽

Dry Matter Production ◽

Native Plant ◽

Native Plant Species ◽

Livestock Feed ◽

Matter Production ◽

Forage Species ◽

Nutritive Values

The native vegetation of Kuwait is well adapted to hyper arid environment and once these naturally vegetated plants are managed properly these may be considered potential candidates as animal feed. Bringing the neglected and underutilized native plant species into animal food chain is promising. Considering the importance of some native plants, five native forage species (Cenchrus ciliaris, Cenchrus setigerus, Lasiurus scindicus, Panicum turgidum and Pennisetum divisum) were compared to widely used exotic forage species Panicum virgatum to measure the effects of fall (October) vs spring (March) planting on the biomass yield and the nutritive value. The results indicate that four species, C. setigerus, C. ciliaris, L. scindicus and P. divisum, showed a higher dry matter production in the spring planting season with relative increase in the nutritive values, i.e., NDF, ADF, fat, protein and ash concentrations as compared to P. virgatum. In general fall season planting, decreased the dry matter production and the nutritive values compared to the spring season. These findings provided opportunities to utilize the natural resources for increasing and or improving livestock feed supply. There is potential for growers to integrate these local forage species into their forage production system.

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Potential for increasing early vigour and total biomass in spring wheat. II. Characteristics associated with early vigour

Australian Journal of Agricultural Research ◽

10.1071/ar9920541 ◽

1992 ◽

Vol 43 (3) ◽

pp. 541 ◽

Cited By ~ 42

Author(s):

KL Regan ◽

KHM Siddique ◽

NC Turner ◽

BR Whan

Keyword(s):

Dry Matter ◽

Genotypic Variation ◽

Growth Period ◽

Early Growth ◽

Dry Matter Production ◽

Total Biomass ◽

High Dry Matter ◽

Green Area ◽

Matter Production ◽

Early Vigour

Increased early growth and total dry matter production have been suggested as useful traits to improve yield in Mediterranean-type environments. In Part I, genotypic variation for early growth and total dry matter production was identified among cultivars and some introduced lines. In this part, characteristics associated with early vigour in five of these introduced lines and ten Australian cultivars were examined in a field study at Wongan Hills in Western Australia. Differences in dry matter production were observed at all sampling times during the season, with three of the introduced lines (CEP 8058, Kansu No. 32 and V979-28) having consistently higher dry matter production than the standard cultivars during the early growth period. Those genotypes with a higher dry matter production at 54 days after sowing had higher relative growth rates and green area indices than those with low dry matter production. Both genotypes with large leaves on few tillers and genotypes with small leaves on many tillers had higher green area indices and higher dry matter production. While high dry matter production was associated with a large degree of ground cover and high light interception, it was not associated with the earlier commencement of reproductive development. Incorporation of early vigour and high dry matter production into locally adapted cultivars is required to demonstrate its benefit in these environments.

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