High Microplant Densities in Greenhouses – Are they Always Efficient in Small Potato Minituber Production Systems?

Dimante, Ilze; Gaile, Z.; Cerina, S.; Proškina, Lîga

doi:10.1007/s12230-022-09876-1

Cited by 2 publications

(2 citation statements)

References 27 publications

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“…Thereafter, they are planted into soil or other substrates in glasshouses, either for production of transplants that are subsequently transplanted to screenhouses or the field, or for direct production of minitubers (e.g. Struik and Wiersema 1999;Tadesse et al 2001a, b;Huarte 2005;Pruski 2007;van der Veeken and Lommen 2009;Lommen 2015;Dimante et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Effects of Age of In Vitro-Derived Potato Plantlets on Early Above- and Below-Ground Development After Planting in Different Cultivars

Lommen

2023

Potato Res.

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In vitro-propagated potato plantlets are commonly used in potato seed tuber production. Four experiments were carried out to identify how the duration of the last in vitro phase (‘age’) before planting of in vitro-produced plantlets affects the early growth and development ex vitro, assessed 10–14 days after planting. Experiments included varying ranges in age of the in vitro plantlets at planting (10–40, 15–45, 14–28 and 14–56 days old at the moment of planting in the respective experiments) and different cultivars. Because in vitro plantlet size increases with age, the first experiment studied interactions between age and planting method. Planting ‘deep’ (the upper four visible leaves above the ground) seemed more robust than planting ‘shallow’ (all nodes/leaves above ground except the lowest two), and in later experiments, only deep planting was applied. Across experiments, plants grown from younger in vitro plantlets had smaller leaf areas 10–14 days after planting than those from older in vitro plantlets. The increase in leaf area levelled off with increasing age of the in vitro plantlets used, especially when plantlets were older than c. 28 days. Larger leaf areas 10–14 days after planting were related to the older in vitro plantlets having higher absolute growth rates after planting and a larger above-ground leaf area at planting, even though four leaves were kept above ground in all treatments. Below ground, plants from older in vitro plantlets had more stem nodes, initiated stolons earlier after planting and initiated more stolons per plant. Tuber initiation rarely occurred within 14 days after planting, but was observed in some plants from 42- and especially 56-day-old in vitro plantlets of the very early cultivar Gloria and a single plant from 56-day-old in vitro plantlets of the mid-early cultivar Bintje. The data show that planting older in vitro plantlets can enhance early leaf area growth. Plants from older in vitro plantlets also more readily initiate stolons below ground and may be more advanced in the tuber formation process, especially when from early cultivars.

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Section: Introductionmentioning

confidence: 99%

Effects of Age of In Vitro-Derived Potato Plantlets on Early Above- and Below-Ground Development After Planting in Different Cultivars

Lommen

2023

Potato Res.

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“…The plantlets are planted into soil or other substrates, or used for aeroponic production, and are then grown in glasshouses for the production of minitubers or transplants that are later planted in the field or screenhouses (e.g. Struik and Wiersema 1999;Tadesse et al 2001a, b;Huarte 2005;Pruski 2007; van der Veeken and Lommen 2009;Lommen 2015;Dimante et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Environmental Conditions After Planting Affect the Expression of Differences in Tuber Formation of In Vitro-Derived Potato Plantlets from Different Ages and Cultivars

Lommen

2023

Potato Res.

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To identify if and how the age of in vitro potato plantlets at planting affects the later tuber formation, an extensive pot experiment was performed under controlled conditions. In vitro-derived plantlets of different ages (14, 28, 42 and 56 days old at planting) and cultivars varying in maturity type (Gloria, very early; Bintje, mid-early; Elkana, late) were grown after planting for 10 weeks at photo/thermoperiods of 16 h (standard conditions) or 12 h (short-day conditions). Plants raised from older in vitro plantlets produced higher total dry weights, harvest index and tuber dry and fresh weights than plants from younger in vitro plantlets when grown under standard conditions after planting. By contrast, total and tuber dry weights were not affected by plantlet age when grown under short-day conditions. The number of tubers per plant increased with increase in in vitro plantlet age in the later cultivars and in the oldest age classes of the very early cultivar when plants were grown under standard conditions. Short-day conditions resulted in fewer, but larger tubers than standard conditions. Results support the ideas that (1) plants from older in vitro plantlets and earlier maturing cultivars are more advanced in the tuber formation process; however, this may benefit tuber yield only when plants are grown under conditions that are not strongly inducing tuberization, and (2) higher tuber numbers can be achieved by more below-ground nodes—as in older in vitro plantlets—and/or by later or less strong tuber induction—as in less inducing conditions (16-h vs. 12-h), later cultivars or younger in vitro plantlets.

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High Microplant Densities in Greenhouses – Are they Always Efficient in Small Potato Minituber Production Systems?

Cited by 2 publications

References 27 publications

Effects of Age of In Vitro-Derived Potato Plantlets on Early Above- and Below-Ground Development After Planting in Different Cultivars

Effects of Age of In Vitro-Derived Potato Plantlets on Early Above- and Below-Ground Development After Planting in Different Cultivars

Environmental Conditions After Planting Affect the Expression of Differences in Tuber Formation of In Vitro-Derived Potato Plantlets from Different Ages and Cultivars

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