Tartary buckwheat breeding (Fagopyrum tataricum L. Gaertn.) through hybridization with its Rice-Tartary type

Abstract

Tartary buckwheat (Fagopyrum tataricum) is a highly nutritious crop that is widely grown in Asia, but the Xour contains a large portion of the hull if it is ground with industrial processing since the hull is very hard to remove as it adheres to the testa layer of the groat. Rice-Tartary, a particular type of Tartary buckwheat, has seeds with a loose hull and the presence of splits on the sides of the seeds that make dehulling easily. The present study reports on the Wrst attempt of crop improvement in Tartary buckwheat breeding through hybridization. Hybrids were obtained by hybridization of crosses between Tartary buckwheat and Rice-Tartary. Additional crosses were made among selected progenies of these crosses. Based on progeny analysis of the F 1 , F 2 , and F 3 , the character of Rice-Tartary, as exhibited as the presence of splits on the sides of the seeds, is controlled by one gene which is homozygous recessive. A Tartary buckwheat breeding program has been conducted for 6 years based on these crosses. Advanced lines with easy dehull and yield potential are at the stage of ready for yield trials. Production of easy dehulling Tartary buckwheat in the future could boost Canada's domestic and international markets.

Suitability of Rice-Tartary Buckwheat for Crossbreeding and for Utilization of Rutin

“…As Wang and Campbell 10 described, rice-Tartary buckwheat that we possessed had a long vegetative period and excessive plant growth in our experimental field. A long vegetative period is a critical defect at high latitudes because the plant is always killed by autumn frosts before maturation.…”

“…The seeds are small and the yield is very low, mainly owing to the long vegetative period 10 . 'Hokkai T8', with a light-brown adhering hull, is a high-yielding cultivar of Tartary buckwheat grown widely in Hokkaido, Japan.…”

“…Rice-Tartary buckwheat is grown and used in place of rice in limited areas of Nepal, Bhutan, and southern China 1 . Wang and Campbell 10 were the first to report the hybridization of rice-Tartary and Tartary buckwheats for developing Tartary buckwheat that possesses non-adhering hull, but they obtained only a few hybrids, and backcrossing failed. Information on riceTartary buckwheat for sustainable crossbreeding is limited, and its crossability with Tartary buckwheat remains unclear.…”

Evaluation of Chlorophyll Content, Antioxidant Activity and Phenolic Compounds in the Seedlings of Rice-type Tartary Buckwheat

“…B, C and D represent seedlings harvested in 3, 6 and 9 days after germination, respectively. (Wang et al, 2007). In previous study, Li et al (2012) …”

Hybridization Technique in Tartary Buckwheat (Fagopyrum tataricum Gaertn)

“…Therefore, it is extremely difficult to emasculate manually. Only Mukasa et al (2007) and Wang and Campbell (2007) produced F 1 seeds among tartary buckwheat. With the hot water aided emasculation, we produce F 1 seeds among Tartary buckwheat first time in Nepal.…”