Experiências Com O Cultivo De Linhaça Em Santa Catarina: Aspectos Edafoclimáticos E Genéticos

Abstract

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Informative prior distribution applied to linseed for the estimation of genetic parameters using a small sample size

“…Considering these covariates, most traits presented a lower genetic value in the sixth seasonwith sowing on June 30 and harvesting on December 9 -, when the vegetative and reproductive phases of the crop occurred from June to August. According to Bosco et al (2021), these phases are the most affected by air temperature, as noted in the present study for the genetic values of productive branches, total number of capsules, and reproductive insertion height. High temperatures, for example, can lower significantly grain yield (Čeh et al, 2020), which explains the lowest values for grain mass per plant and number of grains per plant.…”

“…that weather conditions could greatly impact the length of the crop growing season. Bosco et al (2021) added that the productive performance of the crop can also be impaired by strong winds that can cause plant lodging; in the present study, wind speed was higher in June, October, and November. Therefore, extreme event conditions -such as hail, frost, rain excess or deficit, and wind speed -can significantly alter seeds, oil, and fiber yield and quality.…”

“…Casa et al (1999) concluded that air temperatures from -4 to -7°C during the germination period could inhibit emergence due to seed freezing, and that the formation of light frosts at -1°C can cause severe damage to the flower and immature capsules. Bosco et al (2021) highlighted that, for a better plant development, thermal limits should be established. However, in the case of linseed, these limits are not clearly defined in the literature, varying according to the assessed genotypes.…”

“…The lack of rain also affects negatively linseed yield. In the initial phase, water deficit inhibits plant development, especially of the root part (Guo et al, 2012), and, in the reproductive phase, it causes flower abortion and number reduction, which limits the number of capsules per plant and of seeds per capsule (Bosco et al, 2021). Čeh et al (2020) also found that water shortages affect linseed yield, shortening the plant growth cycle, and Table 1.…”