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Influence of rootstocks on scion leaf mineral content in mango tree ( Mangifera indica L.)
Horticulture, Environment, and Biotechnology ( IF 2.4 ) Pub Date : 2021-05-03 , DOI: 10.1007/s13580-021-00355-w
Ali Sarkhosh , Shirin Shahkoomahally , Constancio Asis , Cameron McConchie

Grafting is an important practice in mango (Mangifera indica L.) orchard management for propagating elite germplasm but there is limited information on the effect of rootstock-scion interactions on the mineral nutrition of mango. Here, we analyzed the variations in leaf nutrients of commercial (‘B74’ and ‘Kensington Pride’ [KP]) and newly developed cultivars from the National Mango Breeding Program (NMBP) (‘NMBP1243’, ‘NMBP1201’, and ‘NMBP4069’) grafted onto six different rootstocks (‘B’, ‘KP’, ‘Mallapunyah’, ‘SabahBRF’, ‘Vellaikulamban’, and ‘Watertank’) to determine the influence of the rootstock on the scion leaf nutrient content. Deviation from the optimum percentage (DOP and ΣDOP indexes) was calculated to compare nutrition status/balance among the different rootstocks. Leaf nutrient concentrations and their DOP index were affected by the rootstocks and scions. None of the rootstocks or scions had consistently higher or lower nutrient levels, and interaction effects between rootstock and scion factors were insignificant. The DOP index indicated an imbalance of nutrients in the leaves, but scions grafted onto rootstocks ‘Vellaikulamban’ and ‘SabahBRF’ were more nutritionally balanced, indicating that they are preferred rootstocks for propagation. Principal component analysis showed a clear separation among rootstocks according to their differences in nutrient concentrations, such that ‘Vellaikulamban’ and ‘SabahBRF’ (Group 1) were different from ‘Watertank’ and ‘B’ (Group 2) as well as from ‘KP’ and ‘Mallapunyah’ (Group 3). Scions were clustered based on their similarities with ‘B74’ and ‘NMBP1201’ in Cluster 1, ‘NMBP 4069’ in Cluster 2, ‘NMBP 1243’ in Cluster 3, and ‘KP’ in Cluster 4. This study provides valuable information to understand the potential impact of the rootstock on the nutritional status of scions as well as for the selection of rootstock-scion combinations for variety improvement.



中文翻译:

砧木对芒果树接穗叶片矿物质含量的影响

嫁接是芒果的重要实践(Mangifera indicaL.)果园管理以繁殖优良种质,但是关于砧木-接穗相互作用对芒果矿物质营养影响的信息有限。在这里,我们分析了商业芒果(“ B74”和“肯辛顿骄傲” [KP])以及来自国家芒果育种计划(NMBP)(“ NMBP1243”,“ NMBP1201”和“ NMBP4069”)的新开发品种的叶片营养成分的变化。 )嫁接到六种不同的砧木上('B','KP','Mallapunyah','SabahBRF','Vellaikulamban'和'Watertank'),以确定砧木对接穗叶片养分含量的影响。计算出与最佳百分率(DOP和ΣDOP指数)的偏差,以比较不同砧木之间的营养状况/平衡。叶片砧木和接穗会影响叶片养分浓度及其DOP指数。砧木或接穗均无一贯地较高或较低的营养水平,砧木和接穗因子之间的相互作用影响不显着。DOP指数表明叶片中养分不平衡,但嫁接到砧木“ Vellaikulamban”和“ SabahBRF”上的接穗在营养上更加均衡,表明它们是繁殖的首选砧木。主成分分析表明根茎之间根据养分浓度的差异有明显的分离,因此“ Vellaikulamban”和“ SabahBRF”(第1组)与“ Watertank”和“ B”(第2组)以及“ KP”不同”和“ Mallapunyah”(第3组)。接穗根据与群集1中的'B74'和'NMBP1201',群集2中的'NMBP 4069',群集3中的'NMBP 1243'和群集4中的'KP'的相似性进行群集。

更新日期:2021-05-03
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