Phenotypic variation of baobab (Adansonia digitata L.) fruit traits in Mali
Phenotypic variation of baobab (Adansonia digitata L.) fruit traits in Mali
复制标题
马里猴面包树（Adansonia digitalata L.）果实性状的表型变异
DOI：
10.1007/s10457-010-9357-0
复制
发表时间：
2011
影响因子：
2.2
通讯作者：
R. Samson
中科院分区：
文献类型：
--
作者：
S. Smedt;K. Alaerts;A. Kouyaté;P. Damme;G. Potters;R. Samson
分析了猴面包树（Adansonia digitata L.）来自马里的水果，以确定本种的驯化潜力。从沿着降雨梯度分布的10个种源中选出269株进行了特征鉴定。从每棵树上取五个果实。总单果重被划分为壳，果肉，和种子重量。计算果肉+种子与总重量之间以及果肉与种子重量之间的比率。对于所有测量的果实性状，我们检测到种源之间的显着差异，以及来自同一种源的树木之间。假设测量的性状是遗传控制下，后者的事实表明，有相当大的机会，在当地规模的树木选择。然而，具有特定属性的候选加树，例如，极高的果肉或种子重量，只在某些地方发现。通过选择果肉重量最高的5%的树（平均：45 ± 1 g，最好的5%：>100 g），可以显著地增加每个果实的平均果肉产量。种子生产也可能如此（平均值：71 ± 2 g，最佳5%：>150 g）。果肉和种子重量之间的比率也可以是用于选择的重要水果特征：在具有低比率的水果中，当通过研磨分离两个水果部分时，相对更多的果肉粘在种子上，因此更多的果肉将损失用于进一步加工。我们确定了几个树与高纸浆重量结合纸浆和种子重量之间的比例高。它的结论是有相当大的表型变异的猴面包树果实性状在马里，品种选择提供了机会。
We analyzed the phenotypic variation of baobab (Adansonia digitata L.) fruits from Mali to define the domestication potential of this species. 269 trees, selected from 10 provenances distributed along a rainfall gradient, were characterized. Five fruits were sampled from each tree. Total individual fruit weight was partitioned into shell, pulp, and seed weight. Ratios were calculated between pulp + seed and total weight, and between pulp and seed weight. For all the measured fruit traits, we detected significant differences between provenances, as well as between trees from the same provenance. Assuming that the measured traits are under genetic control, the latter facts indicate that there are considerable opportunities for tree selection on a local scale. However, candidate plus trees with specific properties, e.g., extremely high pulp or seed weight, were found only in some locations. Mean pulp yield per fruit might be considerably increased by selecting the 5% trees with the highest pulp weight (mean: 45 ± 1 g, best 5%: >100 g). The same might be true for seed production (mean: 71 ± 2 g, best 5%: >150 g). Also the ratio between pulp and seed weight can be an important fruit characteristic for selection: in fruits with a low ratio, relatively more pulp sticks to the seeds when separating the two fruit parts by grinding, and thus more pulp will be lost for further processing. We identified several trees with a high pulp weight combined with a high ratio between pulp and seed weight. It is concluded that there is considerable phenotypic variability in traits of baobab fruit in Mali, offering opportunities for cultivar selection.