Wind Pollination in Indian Mustard [Brassica juncea (L.) Czern & Coss]
54 / 18
Keywords:
Mustard, pollination, seed settingAbstract
The experiments to assess the extent of wind pollination in Brassica juncen ev. Pusa Bold were conducted at IARI, New Delhi for three years (1996-97-1998-99). Dispersal of pollen grains by wind was noticed up to 35 meters from the pollen source. Air-borne pollen grains may pass through insect proof net and the effective pollination may occur. The extent of wind pollination was recorded up to 11 to 17.5 per cent. In want of pollen the flowers of male sterile plants may develop multistigmas to intercept effectively wind-borne pollen.
Downloads
References
1. BECKER, H.C., C. DAMGAARD & B. KARLSON (1992). Environmental variation for out crossing rate in rapeseed. In: Proc. 6th Inter. Rapeseed Conf. Poznan. 5: 1454-1459.
2. PEARSON, B. (1956). Obsevationner rorande blommornas biology hos raps. Statens vaxttskyddsanstalt Meddelande, 66: 1-67.
3. OLSSON, G. (1955). Investigation of degree of cross pollination in white mustard and rape Sver, Utsacdesfoeren Tidskr, 62: 311-322.
4. EISIKOWITCH, O. (1981). Some aspects of pollination of oilseed rape (Brassica napus L.). Agric. Sci. (Camb)., 96: 321-326.
5. LABANA, K. S. & S.S. BANGA (1984). Floral biology in Indian mustard [Brassica juncea (L.) Coss.]. Genetica Agraria, 38: 131-138.
6. WILLIAMS, LH. (1978). The pollination requirements of swede rape (Brassica napus L.) and of tunip rape (Brassica campestris L). J. Agric. Sci. (Camb)., 91: 343-348.
7. TIMMONSAM., E.T.O.BRIEN, Y.M. CHARTERS, S.J. DUBBLES, & J. WILKINSON (1995), Assessing the risk of wind pollination from fields of genetically modified Brassica napus (oleifera). Euphytica, 85: 417-423.
8. Mc CARTNEY, H.A. & M.E.LACEY (1991). Wind dispersal of pollen from crops of oilseed rape (Brassica napus L.). J. Aerosol Sci., 22(4): 467-477.
9. MONASSE, R. & P. KAREIVA (1991). Quantifying the spread of recombinant-genes and organisms. In: Assessing Ecological Risk of Biotecnology, (ed) I. Ginzburgh, pp. 215-231.
10. SCHEFFER, J.A., R. PARKINSON. & P.J.DALE (1993). Frequency and distance of pollen dispersal from transgenic oilseed rape (Brassica napus). Trans. Res., 2: 356-364.
11. WILLIAMS, I. H. (1984). The concentrations of air-borne rape pollen over a crop of oilseed rape (Brassica napus L.). J. Agric. Sci., 103: 353-357.
12. LANGRIDGE, D. E. & R.D. GOODMAN (1982). Honeybee pollination of oilseed rape, cultivar Midas. Aust. J. Exp. Agric. Anim. Husb., 22: 124-126.
13. JENKINSON, J.P. & G.P. GLYNNE-JONES (1953). Observations on the pollination of oil rape and broccoli. Bee Wld., 34: 173-177.
14. MESQUIDA, J. & M.RENARD (1978). Entomophilous pollination of male-sterile strains of winter rapeseed (B. napus L. Metzager var. olifera) and preliminary study of alternating device. In: Proc. 4th Int. Symp. Poll. Maryland Agricultural Experimental Station, Miscellaneous publication. 1: 49-57.