Haploidy breeding and mutagenesis for drought tolerance in wheat

Khan, Abdul Jabbar; Hassan, Shoaib; Tariq, Muhammad; Khan, Tasnim

doi:10.1007/978-94-015-9996-2_7

Cited by 17 publications

(15 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Increased proline content in drought-stressed plants has been reported to be less in drought-tolerant types (22). Although Oktem et al (24) have not observed a significant change in proline content in root and shoot tissues under drought stress, our results indicate that proline accumulation does occur under drought stress in the leaves of lentil varieties, which are consistent with the results of previous studies (8,10,25,26,27). Our results also indicate that the rate of photosynthesis and water potential of leaves and flowers decrease under drought stress, which are similar to the results of Liu et al (28).…”

Section: Discussionsupporting

confidence: 92%

See 1 more Smart Citation

Investigation of the Mechanism of Physiological Tolerance in Lentil (Lens culinaris Medik.) Cultivars under Drought Stress Conditions

Morgil¹,

Gerçek²,

Çalışkan³

et al. 2017

Eur J Biol

View full text Add to dashboard Cite

Lentil (Lens culinaris Medik.) is valued throughout the world for human and animal nutrition because of its high protein, vitamin, and mineral contents. Lentil production has decreased worldwide due to global warming. Although the physiological parameters of lentil plants have been examined under drought conditions, its tolerance mechanism has not been fully elucidated yet. In this study, lentil seedlings following germination were exposed to drought stress using 15% polyethylene glycol (PEG) application for 7 days. The untreated control plants were allowed to grow under conditions similar to that of germination. Oxidative stress responses (relative water content, chlorophyll content, H 2 O 2 formation, lipid peroxidation, and proline accumulation) were compared in leaf samples of experimental and control group plants grown for 7 days under drought stress. Although the physiological and biochemical responses of the cultivars Fırat 87 and Çiftçi were close to each other, proline accumulation, malondialdehyde, and H 2 O 2 levels were found to increase in the Sultan cultivar. Thus, it can be concluded that Fırat 87 and Çiftçi cultivars are more resistant to drought than the Sultan cultivar.

show abstract

Section: Discussionsupporting

confidence: 92%

“…Drought increased H 2 O 2 accumulation and lipid peroxidation in plants while reducing ascorbic acid concentrations. Several studies have shown that drought stress causes an increase in proline which is an important parameter in determining the extent of tolerance to drought (8)(9)(10)(11).…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Mechanism of Physiological Tolerance in Lentil (Lens culinaris Medik.) Cultivars under Drought Stress Conditions

Morgil¹,

Gerçek²,

Çalışkan³

et al. 2017

Eur J Biol

View full text Add to dashboard Cite

show abstract

“…On the contrary in wheat Khan et al (2001) have reported an increase in androgenic response from c-ray irradiated F 1 donor plants, however, similar to our findings, lethality of induced mutations in this case affected mostly plantlet regeneration. In our experiments the final realization of mutant DH lines is low (nine lines from one genotype-BIO 902), this is similar to low recovery of DHmutants in barley and wheat from reports mentioned above.…”

Section: Discussionsupporting

confidence: 84%

Harnessing mutant donor plants for microspore culture in Indian mustard [Brassica juncea (L.) Czern and Coss]

Prem

Gupta²,

Agnihotri³

2011

Euphytica

View full text Add to dashboard Cite

Haploid mutagenesis offers several advantages over conventional (seed) approach. However, its potential has not been utilised for Brassica juncea, an important oilseed. In this study, mutant donor plants of three Indian B. juncea genotypes, generated by ethyl methanesulfonate (EMS) and ethyl nitrosourea (ENU), were used for microspore culture. The response of mutant donor plants was about 100 times lower than non-mutant controls; a total of 9,411 embryos were produced from the EMS treated donor plants, while microspores isolated from ENU treated donors did not yield any embryos. The lethality of induced mutations demonstrated itself mainly as the induction of abnormal embryos (80%), failure of germination (70%) and failure of plantlet development (70%). Nine doubled haploid (DH) mutant lines and three non-mutant DH lines obtained through this approach were tested for agronomic and biochemical variation over two growing seasons. High variability was observed and stable mutants were recovered for reduced height (125 vs. 168 cm for the control), appressed pod character, altered fatty acid composition higher protein proportion in de-oiled meal (48%) and a lower glucosinolate content in de-oiled meal (59.5 lM/g) relative to controls. The approach demonstrates that despite severe reduction in efficiency of the DH line production, valuable mutants can be recovered from mutated donor plants.

show abstract

“…We chose different-ploid wheat varieties because, due to their genetic background and lengthy artificial selection process in modern wheat breeding in semiarid northwestern China, they were likely to carry the best adaptations to a dry environment for crops. Genetic variation in nHRS is essential for exploring genetic control in anti-drought breeding (Blum and Johnson 1993;Khan et al 2001;Passioura 2004). We measured the soil water content (SWC) threshold at which the nHRS appeared and disappeared in plants in drying soil for six polyploid wheat varieties, and also quantified their respective drought resistance as their survival and growth statistics under drought compared with wet conditions.…”

Section: Introductionmentioning

confidence: 99%

Performance of wheat crops with different chromosome ploidy: root-sourced signals, drought tolerance, and yield performance

Xiong

Zhang

2006

Planta

View full text Add to dashboard Cite

Pot-culture experiments were carried out to estimate the role of non-hydraulic root signals (nHRS) and the relation of these signals to drought tolerance and grain yield formation under drought stress in six wheat varieties. These were two modern hexaploid wheat (Triticum aestivum L., AABBDD) Plateau602 and Longchun8139-2, two diploid wheat (Triticum monococcum L., AB) MO1 and MO4, and two tetraploid wheat (Triticum dicoccum Schuebl L., AABB) DM22 and DM31. In the two diploid relatives, the nHRS was switched on and off at a soil water content (SWC) of approximately 53-45% field water capacity (FWC). In contrast, in the modern hexaploid varieties, Longchun8139-2 and Plateau602 the nHRS occurred between a SWC of about 71 and 35% FWC, a much wider soil moisture range. The two tetraploid relatives, DM22 and DM31, were generally intermediate. The nHRS threshold range in SWC also narrowed as all six varieties went through successive developmental stages from shooting to grain filling. The two hexaploid wheat varieties had the longest duration of survival after the water supply ceased, and the best yield stability under drought stress, similar to with tetraploid wheat varieties; the diploid wheat varieties were least robust. These two parameters were both significantly correlated with the nHRS soil moisture threshold range (r=0.9456** and 0.8608*, respectively). Based on these patterns, we propose a "triple Z" model to describe the features of non-hydraulic stomatal sensitivity versus soil drought in wheat growth.

show abstract

Haploidy breeding and mutagenesis for drought tolerance in wheat

Cited by 17 publications

References 4 publications

Investigation of the Mechanism of Physiological Tolerance in Lentil (Lens culinaris Medik.) Cultivars under Drought Stress Conditions

Investigation of the Mechanism of Physiological Tolerance in Lentil (Lens culinaris Medik.) Cultivars under Drought Stress Conditions

Harnessing mutant donor plants for microspore culture in Indian mustard [Brassica juncea (L.) Czern and Coss]

Performance of wheat crops with different chromosome ploidy: root-sourced signals, drought tolerance, and yield performance

Contact Info

Product

Resources

About