Breeding of polyploid heather (Calluna vulgaris)

Przybyla, Annett; Behrend, A.; Bornhake, Christian; Hohe, Annette

doi:10.1007/s10681-014-1117-1

Cited by 7 publications

(1 citation statement)

References 19 publications

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“…Some reports have shown that these triploids had relatively high rubber yields and good cold resistance [5,6], representing good breeding value in rubber tree development. Triploid can be induced by crossing tetraploid with diploid, or by combining unreduced (2n) gametes with reduced (n) gametes [7,8]. At present, no rubber tree tetraploids in the wild have been reported.…”

Section: Introductionmentioning

confidence: 99%

Microsporogenesis and Induction of Unreduced Pollen with High Temperatures in Rubber Tree Clone RRIM 600

Yao

Long

et al. 2017

Forests

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Abstract:In order to induce unreduced pollens, microsporogenesis and male flower bud (MFB) development were compared in rubber tree clone RRIM 600. We observed strong asynchronism in different MFBs in an inflorescence. Asynchronism of microsporogenesis in different microsporangiums from a MFB was also observed. The relationship between microsporogenesis and external morphology was examined, which was used to estimate microsporogenesis stages of MFBs. Unreduced pollen was successfully induced by high temperature exposure in this study, with the highest production ratio of about 20.17% at 44 • C. Our findings showed that diplotene to metaphase I may be the most effective stage for unreduced pollen induction, and 42-44 • C may be the suitable treatment temperature in rubber trees. Thus, microsporogenesis of MFBs has been elucidated in detail in the rubber tree clone RRIM 600 and will provide a reference for future breeding studies of rubber trees.

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Section: Introductionmentioning

confidence: 99%