| dc.contributor.advisor | Professor Dr. Sripati Sikder | |
| dc.contributor.author | ISLAM, MD. NAZRUL | |
| dc.date.accessioned | 2022-04-22T05:50:22Z | |
| dc.date.available | 2022-04-22T05:50:22Z | |
| dc.date.issued | 2014-12 | |
| dc.identifier.uri | http://localhost:8080/xmlui/handle/123456789/509 | |
| dc.description | Wheat (Triticum aestivum L.) is an important cereal crop of the world ranking first both
in acreage and production among seed crops. At least one third of the total population of
the world lives on wheat grains. It provides more nourishment for the nations of the
world than any other food crops. It is produced under diverse environmental conditions
ranging from well irrigated to water stress situations and wheat yield are reduced 50-90%
of their irrigated potential by drought on at least 60 Mha in developing world. In Make
para Bangladesh Wheat is the second most important cereal crop next to rice (BBS
2005). The area under wheat cultivation is about 0.706 million hectare producing 1.507
million tons of wheat with an average 2.013 ton per hectare (BBS 2005). Therefore, in
Bangladesh its average yield is very low (2.13 t ha’) compared to other advanced
countries of the world. One of the major causes for low is shortage of water during the
growing season. It is grown in the winter season (usually November to April) which is
dry as well as inadequate soil moisture. Although the vast storage of soil moisture
resulted from monsoon rain supports the plant growth favourably at the early stages of
growth, the plant suffers from water stress at the reproductive stage when the residual
soil moisture depletes (Karim et al. 2000). Boyer (1982) claimed that water stress limited
global productivity more severely than that caused by any other environmental stresses.
Therefore, about 42.78% of the total wheat area in the country is irrigated and rest of the
area is cultivated under drought condition (BBS 2005). The present situation is not far
better than this. | en_US |
| dc.description.abstract | The experiment was conducted at research field and laboratory in the Department of Crop
Physiology and Ecology, Hajee Mohammad Danesh Science and Technology University,
Dinajpur during the period of November 2013 to April 2014. It was laid out in a split plot design
with three replications. The treatment factors were A- Main plot treatments two growing
conditions viz. i. well watered condition (giving three irrigations) and ii. water limited drought
condition (giving one irrigation at 20 DAS for seedling establishment) and B- Sub plot
treatments: six wheat genotypes viz. BAW 1170, BAW 1161, BAW 1163, BAW 1151, BARI
Gom 26 and BAW 1135. To attain different phenologcal stages, the maximum number of days
were required for BAW 1170, BAW 1161 and BAW 1163 followed by BAW 1151 and BARI
Gom 26, whereas the minimum number of days were required for BAW 1135 under well watered
and water limited drought condition. Higher leaf chlorophyll content and leaf proline content
were also showed higher by drought tolerant wheat genotypes compared to other genotypes at
both the well watered and water limited condition. At water limited drought condition wheat
genotypes BAW 1170, BAW 1161 and BARI Gom 26 showed higher level of plant height, spike
length, floret sipkelet’, grains sipkelet'1, floret sipke, grains sipke 1000 seed weight and
lower the floret sterility than the genotypes BAW 1151, BAW 1163 and BAW 1135. BAW 1170
gave the highest grain yield (4.2 t ha!) and BAW 1135 produced the lowest grain yield (2.8 t ha”)
at well watered condition. At water limited drought condition the highest grain yield was
produced by BAW 1170 (3.5 t ha) and the lowest grain yield was produced by BAW 1135 (2.0t
ha’). BAW 1170 and BAW 1135 showed the highest harvest index (40.00%). BARI Gom 26
showed the lowest harvest index (34.11%) under well watered condition. Whereas at water
limited drought condition the highest harvest index was given by BARI Gom 26 (38.71%) and
the lowest harvest index was showed by BAW 1163 (31.58). Finally, from the DSI (Drought
susceptible index) based on grain yield it may be concluded that wheat genotypes BAW 1161,
BAW 1170 and BARI Gom 26 were regarded as drought tolerant and genotypes BAW 1151,
BAW 1163 and BAW 1135 were considered as drought susceptible. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR. | en_US |
| dc.subject | Phenology and physiological characters in relation to water stress | en_US |
| dc.subject | yield and yield component under water stress | en_US |
| dc.subject | Morphological and yield parameters | en_US |
| dc.title | STUDY ON MORPHO-PHYSIOLOGICAL CHARACTERISTICS AND YIELD PERFORMANCE OF WHEAT GENOTYPES UNDER WATER LIMITED DROUGHT CONDITION | en_US |
| dc.type | Thesis | en_US |
