WebHeterostyly is a distinct floral polymorphismand herkogamy pattern and includes distyly and tristyly. Heterostyly has been reported in 31 families of angiosperms. It is considered to play an important role in protecting the functional pistil and stamens, ensuring reproduction by avoid selfing, and increasing male fitness and outcrossing rates ... WebNov 15, 2024 · Tristyly functions to promote cross-pollination, but modifications to stamen position commonly cause transitions to selfing. Here, we integrate whole-genome sequencing and genetic mapping to investigate the genetic architecture of the M locus and the genetic basis of independent transitions to selfing in tristylous Eichhornia paniculata.
The genetic control of tristyly in Oxalis section Ionoxalis
WebJan 14, 2008 · Tristyly, self-compatibility and floral variation in Decodon verticillatus (Lythraceae) Biological Journal of the Linnean Society Oxford Academic Abstract. Heterostyly typically involves reciprocal polymorphism in stamen and style lengths, physiological self- and intramorph-incompatibility, and a set of a WebDec 3, 2009 · Although some studies have shown that the breakdown of tristyly generally involves modifications in the length of the mid stamens of both short- and long-styled morphs (Mulcahy, 1964; Ornduff, 1964; Lewis & Rao, 1971; Lewis, 1975; Weller, 1979), no studies have examined whether such changes involve an increase in the extent of … china official news agency
The genetic architecture of tristyly and its breakdown to self ...
Web(a) Distyly: It refers to two types of styles (short and long) and stamens (low and high). This system operates in the family Primulaceae. In Primula, there are two types of flowers: viz.: … WebIn this study, we take advantage of the evolutionary transition from tristyly to distyly experienced by Oxalis alpina (Oxalidaceae), and examined whether modifications in the ancillary traits (pollen and stigma size) respond to allometric changes in other floral traits. Tristyly is a rare floral polymorphism that consists of three floral morphs that differ in regard to the length of the stamens and style within the flower. This type of floral mechanism is thought to encourage outcross pollen transfer and is usually associated with heteromorphic self-incompatibility to reduce … See more The three floral morphs of tristylous plants are based on the positioning of the male and female reproductive structures, as either long-, mid-, or short-styled morphs. Often this is shortened to L, M and S morphs. There are … See more Heterostyly has been found in at least 28 families, while tristyly has only been found in six families. The rarity and complexity of tristyly coupled with … See more This incompatibility system is a specific mechanism employed by heterostylous species, where incompatibility is based on the positioning of the reproductive structure of the flower. In tristylous species this is based on two loci, S and M with one allele … See more china official name people republic