Effects of Different Day / Night Temperature Regimes on Growth and Clove Development in Cool-type Garlic (Allium sativum L.)

Abstract

We investigated growth, clove development, and photosystem II activity in garlic (Allium sativum L.) grown under different day/night temperature regimes using Soil-Plant-Atmosphere-Research (SPAR) chambers to determine the optimum cultivation temperature and to assess the impact of temperature stress on garlic. In the early stages of growth, plant growth increased markedly with temperature. At harvest time, however, the pseudostem diameter decreased significantly under a relatively low day/night temperature range (14/10-17/12°C), suggesting that these temperature conditions favor regular bulb growth. At harvest time, the bulb diameter and height were great at 14/10-23/18°C, whereas the bulb fresh weight and number of cloves per bulb were greatest at 17/12-20/15°C. However, the number of regularly developed cloves per bulb was highest at the relatively low temperature range of 14/10-17/12°C, as were the clove length and fresh weight. The photochemical efficiency (Fv/Fm) and potential photochemical efficiency (Fv/Fo) of photosystem II in the leaves of garlic plants were higher at 14/10-20/15°C and lower at temperatures below 14/10°C or above 20/15°C, implying that the 14/10-20/15°C temperature range is favorable, whereas temperatures outside this range are stressful for garlic growth. Furthermore, at temperatures above 20/15°C, secondary growth of garlic, defined as lateral bud differentiation into secondary plants, continuous growth of the cloves of the primary plants, or the growth of bulbil buds into secondary plants, was enhanced. Therefore, to achieve commercial production of fresh scapes and bulbs of garlic, it may be better to grow garlic at relatively low temperature ranges of 14/10-17/12°C.

Agrivoltaic Farming Insights: A Case Study on the Cultivation and Quality of Kimchi Cabbage and Garlic

“…accessed on 1 January 2023). The GDDs (growing degree days) of each crop were evaluated by previous studies [33,34].…”

“…Humidity represents average humidity during cultivation period. z : GDD was calculated based on previous research, using 5 • C as in previous studies [33,34].…”

Analysis of Predictions of Garlic Bulb Weight using LASSO Regression Model

“…Representative studies include analyses of the effects of irradiance on garlic growth (Oh et al, 2017;Atif et al, 2020), the effects of an increase in growing temperature on garlic growth (Kamenetsky et al, 2004;Portela and Cavagnaro, 2004;Oh et al, 2019), the effects of soil properties and soil management on garlic growth (Diriba-Shiferaw, 2016;Oh and Koh, 2020), the effects of diseases on garlic growth and bulb development (Lee et al, 2022), and the effects of high-temperature and humid environmental conditions on the growth and quantity of garlic (Rahim and Fordham, 1997). However, existing analyses explain the growth and development of garlic based on data obtained through controlled experiments in limited spaces.…”

Experimental Control of Day and Night Temperatures to Improve the Growth and External Quality of Salvia miltiorrhiza Bunge

“…pekinensis) (Oh et al, 2014), 라디 치오(Cichorium intybus var. foliosum) (Kim et al, 2022b), 비트(Beta vulgaris) (Lee et al, 2015) 및 한지형 마늘(Allium sativum) (Oh et al, 2017) (Wang et al, 2016;Chen et al, 2018;Liu et al, 2020). 단삼은 상대적으로 주황색-적색의 색소량이 많 아질수록 상대적으로 탄시논 함량 또한 많아지는 것으로 알려져 있으며 (Wang et al, 2016;Chen et al, 2018), 크립토탄시논 (cryptotanshinone), 탄시논 I, 탄시논 IIA(tanshinone IIA) 및 탄시논 IIB(tanshinone IIB)가 뿌리 색상이 붉은색으로 변하는 것에 영향을 미치는 것으로 알려져 있다 (Shi et al, 2005;Wang et al, 2016;Chen et al, 2018).…”