Anther and Pollen Development in Male-Sterile Phaseolus atropurpureus

Microsporogenesis and anther wall development in male-sterile and fertile lines of pigeon pea (Cajanus cajan (L.) Millsp.)

“…8). This character of an enlarged middle layer has been reported in conjunction with male-sterility in Phaseolus atropurpureus [now Macroptilium atropurpureum (URBAN, 1928)] (PRITCHARD & HUTTON, 1972). In the present material, its function appeared to be to absorb nutrients released from the degenerating tetrads.…”

Comparative microsporangium development in male‐fertile and male‐sterile flowers ofConsolea(Cactaceae): When and how does pollen abortion occur

“…in DC) Urb. (as Phaseolus) male-sterile plants (Pritchard & Hutton, 1972) and in the PET1-CMS sunflower (Balk & Leaver, 2001). The death of intersporangial septum cells transforms the tetrasporangiate anther into a bilocular one, and the death of the stomium cells, in conjunction with the endothecial layer, allows anther dehiscence.…”

“…Recently, emphasis has shifted towards the understanding of stamen and male gametophyte development, and the genes involved in those processes in Arabidopsis thaliana (Chaudhury et al 1994;Sanders et al 1999;Zhang et al 2002). In order to determine the timing and place of the male sterility process, anatomical studies were first performed at the light microscope level (Singh & Rhodes, 1961;Dubey & Singh, 1965;Brooks et al 1966;Joppa et al 1966;Kaul & Singh, 1966;Chauhan & Singh, 1966;Pritchard & Hutton, 1972;Graybosch et al 1984;Yonggen & Rutger, 1984;Sawhney & Bhadula, 1988;Kini et al 1994) and later at the ultrastructural level (Overman & Warmke, 1972;Warmke & Lee, 1977;Horner, 1977;Lee et al , 1980Pollak, 1992;Loukides et al 1995). Recent studies combined inheritance, molecular, and ultrastructure techniques for a more comprehensive analysis of male sterility (Dawson et al 1992;Chaudhury et al 1994;Jin et al 1997;Sanders et al 1999).…”

Microsporogenesis in Male Sterile and Male Fertile <i>Crotalaria pallida</i> Ait

“…Differences have also been reported in endothecial development in male fertile and male sterile strains (Pritchard and Hutton, 1972) and it was shown that thick endothecium gradually becomes attenuated to facilitate dehiscence in male fertile sorghum (Webster and Singh 1964), orchard grass (Fillion and Christie 1966) and pearl millet (Reddy andReddi 1970, 1974). In sterile material no such phenomenon was obterved.…”