Genetic analyses of agronomic traits in Tartary buckwheat (<i>Fagopyrum tataricum</i> (L.) Gaertn.)

Abstract

The consumption of products made from Tartary buckwheat (Fagopyrum tataricum (L.) Gaertn.) has increased in recent years in Japan. Increased consumer demand has led to recognition of the need for early varieties of this crop with high and stable yields. In order to accomplish this, more information is needed on the genetic mechanisms affecting earliness and yield. We conducted genetic analysis of 3 agronomic traits (days to flowering, plant height and total seed weight per plant) to segregate F 2 and F 3 populations derived from a cross between Tartary buckwheat cultivars 'Hokuriku No. 4' and 'Ishisoba'. Broad-sense heritability estimates for days to flowering, plant height and total seed weight were 0.70, 0.62 and 0.75, respectively, in F 3 population. Narrow-sense heritability for total seed weight (0.51) was highest, followed by heritability for days to flowering (0.37), with heritability for plant height (0.26) lowest. Later flowering was associated with increased plant height and higher yields. From the F 4 generation, we identified twelve candidate plants with earlier maturity and reduced plant height compared to 'Hokuriku No. 4', but almost the same total seed weight. These results suggest that hybridization breeding using the single seed descent (SSD) method is an effective approach for improving agronomic characteristics of Tartary buckwheat.

Evaluation of Fagopyrum esculentum Moench germplasm based on agro-morphological traits and the rutin and quercetin content of seeds under spring cultivation

“…This could be due to the early transition from vegetative growth to reproductive development, which is characterized by less vegetative growth. In agreement, Li et al (2012) found that late flowering was associated with increased plant height and higher yields. We also detected negative and non-significant correlations between the number of days to flowering and rutin and quercetin content.…”

Tartary Buckwheat Genetic Diversity in the Himalayas Associated with Farmer Landrace Diversity and Low Dietary Dependence

“…Study regions were selected on the basis of the literature as either within the region encompassing the place of origin of buckwheat [32], maintaining diverse buckwheat genetic resources [33], and/or having expansive areas of buckwheat cultivation [34]. Study sites were further selected to encompass the range of agroclimatic conditions where buckwheat grows in the Himalayas.…”

De Novo Assembly and Analysis of Tartary Buckwheat (Fagopyrum tataricum Garetn.) Transcriptome Discloses Key Regulators Involved in Salt-Stress Response

“…is becoming highly attractive because of the high-quality proteins and pharmaceutical ingredients, such as rutin, quercetin and isoquercetin in the seeds [ 25 ]. In China, tartary buckwheat is mainly distributed in the marginal land of Sichuan province, Guizhou province and Yunnan province as the main food of the minorities [ 26 ]. However, in recent years, owing to water deficit and irrational irrigation in these arid areas, soil salinization has become a growing obstacle for tartary buckwheat planting.…”