0 a swollen underground stem or root of a plant from which new plants can grow, as in the potato -- （马铃薯等植物的）块茎
Concentrations increased substantially thereafter to a maximum, about 100 d later, when tubers were said to be mature.
In such cases seed tubers were dug up and transferred to a cooler place (see next section).
Farmers were prepared to accept some late blight in tubers if other characteristics were favourable.
Variation in soil temperatures accounted for 96 and 99 % of the variation in tuber yield at varied population densities and sowing dates, respectively.
It can be concluded that a population of tubers sorted by minimum diameter will also be sorted by mass according to these relationships and variances.
At natural maturity, tubers from the whole trial were harvested immediately and weighed to determine tuber yield (kg).
Fresh tubers can be peeled, chipped, dried and milled into -our.
Absent from private sector research, not surprisingly, are many crops cultivated by the world's poor, including small-grain cereals, tubers and legumes.
