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The percentage of reversion
to the parental types is given in Table
3. Plants in the
segregating generations were classified into triticale, wheat and
intermediate types. Those with compact spike and prominent awns were
classified as triticale type, plants with lax spike and comparatively
short awns were classified as wheat type. Other plants with mixed
morphological features of wheat and triticale were classified as
intermediate type. Useful transgressive segregants were observed in
all the generations. An unusual observation was that more triticale
type plants were recorded in three B1w generations of UPT
75233 x Sonalika, UPT 7681 X
UP 262 and UPT 78268
x UP 2003.
It is suggested that in wheat-triticale hybridization programme,
triticale should be used as the female parent and the desirable
segregants of triticale and intermediate type in the F2
generation of triticale x wheat crosses may be further mated
inter se
in order to
enlarge the genetic variability.
References
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cytology and genetics, Eds: Manna GK and Sinha U, Hindasio Pub, N.
Delhi.
Bremner PM, Echersall and Scott RK (1963) The relative importance of
embryo size and endosperm size in causing the effects associated with
seed size in wheat. J Agri Sci 61: 139-145.
Chauhan SVS (1976) Morphological and histochemical studies in natural
and chemically induced male sterile plants. Curr Sci 45: 274-275.
Clark BE and Peck NH (1968) Relation between the size and performance
of snapbean seeds. N York Agri Expt Stat Bull 819.
Dhillon GS, Kler DS and Walia AS (1976) Effect of seed vigour of
maize, barley, triticale and cluster beans on seedling establishment.
In: Physiology of reproduction in flowering plants Eds: Malik CP,
Srivastava AK, Bhattacharya NC, Singh R. pp. 482-486. Kalyani Publ, N
Delhi.
Jouve N, Bernardo A and Soler C (1984) Hybrids 6x triticale x
Triticum turgidum L. and the obtention of its F2
and BC1 progenies. Cer Res Comm 12: 223-228.
Singh M and Khanna VK (1983) The effect of gamma irradiation on the
site of action of the crossability genes Kr1,
Kr2 between Triticum and Secale.
In: Abstracts of
Int Cong of Gen, N Delhi.
Randhawa GS (1970) Agronomic investigations with seed size of wheat
kalyansona. Ph. D. thesis submitted to P. A. U., Ludhiana.
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