Contact Us

Tel:0371-63387308
      0371-65330928
E-mail:guoshuxuebao@caas.cn

Home-Journal Online-2017 Suppl

Growth characteristics and morphology differences between bisexual flowers and functionally male flowers of‘Tunisia’pomegranate

Online:2020/3/25 9:39:41 Browsing times:
Author: CHEN Lina, LI Haoxian, NIU Juan, XUE Hui, LIU Beibei, WANG Qi, ZHANG Fuhong, ZHAO Diguang, CAO Shangyin
Keywords: ‘Tunisia’soft seed pomegranate;Bisexual flowers;Functionally male flowers;Growth charac⁃ teristics;Morphological observation
DOI: 10.13925/j.cnki.gsxb.2017.S.14
Received date:
Accepted date:
Online date:
PDF Abstract

Abstract: ObjectivePomegranate has two kinds of flowers on a same plant: functional male flowersFMFand bisexual flowersBF. BFs have well-formed pistils and can set fruitsthus they are knownas female fertilevase-shaped. FMFswhich are referred as female sterilitybell-shaped),fail to setfruit and drop finally. The ratio of FMFs is in inverse ratio to the yield of fruit. High ratio of FMFs is one ofthe main factor that impact the yield of pomegranate. To study the morphology and growth characteristicsdifferences between bisexual flowers and functionally male flowers.Methods】‘Tunisiawas used to studygrowth characteristics and morphology differences of bisexual flowers and functionally male flowers.ResultsThe results indicated that1the ratio of bisexual flowers existed variances in different branchtypes. In annual long branchthe ratio of bisexual flowers was significantly lower than that in annual spurannual meddle branch and perennial branchP < 0.01. Howeverthere were no significant differenceamong annual spurannual meddle branch and perennial branch.2The ratio of bisexual flowers was different among different type flowersflowers in cluster was noticeably fewer than in single and pair flowers P < 0.01. The number of bisexual flowers in terminal were more than lateral flowers in cluster flowersP < 0.05.3The ratio of bisexual flowers in fascicle phyllotaxis was higher than that in opposite phyllotaxisP < 0.01.4From the measurement of the various different indices for FMF and BFwe determined differences in OTDOVDand SL as the growth of BVD between FMF and BF.The associations between these parameters and the 17 distinct modules were then compiled. single-organism process”(GO:0065007),“organic substance metabolic process”(GO:0071704),“biological regulation”(GO:0065007),“organic substance biosynthetic process”(GO:0044711),“small molecule metabolic process”(GO:0044281),“phosphate-containing compound metabolic process”(GO:0006796),“lipid metabolicprocess”(GO:0006629),“lipid biosynthetic process”(GO:0008610andorganonitrogen compoundmetabolic process”(GO:1901564were also enriched in these modules.5Pollen germination were observed in functionally male flowers. But they were less than that in bisexual flowers. Pollen tube cant extend to the bottom of style.ConclusionBreeding pomegranate spur type varieties can be an importantbreeding aimbecause the ratio of bisexual flowers in spur was the highest. Moreoverthe pollen can germinate in functionally male flowerschapiterbut cant elongate to the style. Which can pave the way forthe studying of mechanism of pomegranate female sterility.