MORPHO-PHYSIOLOGICAL AND REPRODUCTIVE PATTERN OF LATE SOWN WFIEAT (Triticun aestivum L.)

Abstract

[he experimelit Was carried out at experimental ikid of Sher-e-l3angla Agricultural 1:nkersitv. Dhaka during December. 2011 to April 2012 to observe the elIëct of morpho-phvsio!ogical and reproductive pattern of late sown wheat (Trilirum ue.vlivmn of sonic selected wheat varieties. The experiment comprised of two Lhctors. viz. Factors A: sowing dates (2 sowing (lates) 51 (6 December. 2011) and S (30 December. 2011) and I'actor B: Wheat varieties (7 wheat varieties)- V1 (RAW-!104). \' (Prodip). V1 (Ciourab). V.1 (Suti). \T (Pavan-76). V(,(BL- 1022), and V, (kalyan sena). The experiment was laid out in Randomized complete Week Design (RC'RD) with three replications. Data on different yield contributing characters and yield were recorded where signilicant variation was recorded for sowing dates, wheat varieties, and their interaction elleCLS. At 20DAS, 40DAS. 60D.AS and at harvest the longest plant (20.07cm. 5401cm.82.42cm and 80.22cm) respectively was recorded from sowing on 51 (6 December. 201 I) and shortest plant (1165cm. 29.64cm. 71.13cm and 84.223em) from sowing on S2 30 December, 2011h At 20DAS. 40DAS. 60DAS. and harvest the longest plant (18.69cm. 46.67cm. 83.80cm and 85.14 em) was recorded from wheat variety V2 (Prodip) hile shortest plant 05.42cm .34.73cm. 71.93cm. and 79.03) was recorded from !ieat variety V1, (IlL-I 022). Vs(Pavan-76). V1 (Gourab). maximum no. of tillers per plant (1.277.5.833) was recorded from sowing. S1 (6 December. 2011) and minimwn no. of tillers per plant (1.060. 4.895. 6.91 ) was recorded from S2 30 December. 2011). [he maximum no. of tillers per plant (1.456, 6.467. 9.17) was recorded from wheat variety Vc (Pavan-76). minimum no. ot tillers per plant (0.979. 4.83. 5.83) as recorded from wheat variety V, (Prodip). The longest ear length (14.31cm) was recorded from sowing S (6 December. 201 1) and shortest ear length (14.16cm) was recorded from sowing 52 (30 December. 2011) while the miximum ear length (16.14cm) was recorded from variety \ (Pavan-76) and minimum ear length (13.02 em) was recorded from variety V, (Prodip). [he maximum no. or fertile florets per ear 27.714 was recorded from sowing 5; (6 December. 2011): hilc minimum fertile Ilorets per ear (27.52) was recorded from sowing S (30 December. 201 1) and ihe maximum no. of fertile florets (29) was recorded from the variety V4 ( Pavan-76), while the minimum no. of fertile florets per ear (25.83) was recorded from wheat variety V2 (Prodip). The maximum no. of 'sterile florets per ear (26.767) was recorded from sowing 5' 00 December. 2011) while the minimum sterile florets per ear (26.33) as recorded [mm sowinu SI (6 December. 2011) and the maximum no. of sterile florets per ear (27.5) was recorded from variety V4 (Pavan-76): while the minimum no. of sterile florets per ear (24.667) was recorded from variety V2 (Prodip). The highest yield ( I .42 t ha'') was recorded from sowing S, (6 December. 2011): while the minimum yield (I .35 t ha d) was recorded from sowing 52 (30 December. 2011). The highest yield (1.79 t haS') was recorded from the variety \14 ( Pavan-76). while the minimum yield (0.97 t ha'') was recorded from V2 Prodip,). Among the sowing dates 6 December. 201 1(Si) sowing provided best yield lbr most of the varieties and Ihe varieties V (Pavan-76) provided better yield than the all other varieties. However, the variety V (Pavan-76) provided comparatively steady and better vieW than others varieties. But yield was reduced in ease of late sowing 032 30 December) which was true for all the varieties. Among the treatment combinations S I V5 produce the highest yield with most of the yield contributing character.