Horticulture
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Browsing Horticulture by Subject "Aleurites montana"
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Item Improved Planting Material of the Tung Tree: A Process Report(1946) Webster, C.CThe nature of the variation in flowering habit and yield which is found in a seedling Of Aleurites Montana has been described in two previous papers in this Journal [1] [2]. Briefly, some 40 to 50 per cent of the trees are predominantly male and therefore bear very little fruit, while the remainder, which are known as "bearers", produce a much higher proportion of female flowers and consequently let very much more fruit. These facts are illustrated by the figures of Table I, which show the average yields per tree of a seedling plantation of 123 trees from three Years old, when they began fruiting, to the tenth year. The plantation contained 48 males (39 per cent), and the very small contribution made by these trees to the total yield is readily seen from the second line of figures. There is Considerable yield variation within the bearing trees, the majority giving only moderate yields, while a small proportion are exceptionally good. This can be seen from a comparison of lines 3 and 4 of Table I, and also from Table II, which shows the frequency distribution of the 75 bearing trees according to their yields in the tenth year.Item Observations and Experiments on Flowering and Pollination of the Tung Tree(1944) Webster, C.C.The work described in this paper was carried out in Nyasaland in 1939, 1941 and 1942, and comprised observations on the flowering habit, pollination and fruit setting of Aleurites montana, and experiments on the artificial crossing and selfing of high-yielding trees. Apart from making general notes on the flowering habit of this species, the main objects were, firstly, to study pollination both in a seedling plantation, containing a large proportion of predominantly male trees, and in a plantation of buddings in which there were very few males, and secondly, to raise a number of legitimate seedlings by the artificial crossing or selfing of high-yielding trees. In the latter experiments it was particularly necessary to find out if the high-yielding, predominantly female trees were self fertile.
