The relation between stomata index and drought resistant at rice somaclones of Gajahmungkur, Towuti, and IR 64

Lestari, Endang Gati

doi:10.13057/biodiv/d070112

Cited by 28 publications

(19 citation statements)

References 3 publications

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“…So that there will be many stomata which aims to remove excess water from the body of the plant. Stomata density can affect two important processes in plants, namely photosynthesis and transpiration [19]. It can be concluded that the longer the flooding treatment can also increase the density of stomata in sugarcane [7].…”

Section: Discussionmentioning

confidence: 99%

Tolerance Screening of Sugarcane Varieties Toward Waterlogging Stress

et al. 2020

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The aim of this research was to obtain the resistant plant toward waterlogging stress. The research used complete randomized block design (RBD) with two factors and three replications. The first factors of sugarcane variety are PS 8845, VMC 7616, BL, VMC 86550, PSJK 922 and PS 864. The second factor is the treatments of waterlogging on the level of treatment, that is, without waterlogging, 6, 9, and 12 weeks of waterlogging in bucket. The research results showed that the differences in resistance response of several tested varieties were seen in parameters of number of leaves, number of yellowing leaves, fresh weight of plant, plant height, stem diameter, root length, root’s branch, number of tillers, chlorophyll content, the rate of photosynthesis, stomatal density, shoot leaf size, and leaf angle. Quantitative data character were analysed using ANOVA and DMRT. The conclusion of this research were that PS 8845 and VMC 7616 variety can be recommended as a variety that is resistant to water logging stress. While variety PSJK 922 showed the worst response in condition of waterlogging stress.

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Section: Discussionmentioning

confidence: 99%

Tolerance Screening of Sugarcane Varieties Toward Waterlogging Stress

et al. 2020

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“…Water loss in plants was caused by transpiration through stomata. The stomatal opening and closure depend on the pressure of the plant cell turgor (Lestari 2005). Plant water absorption and movement were influenced by soil moisture, root contact with soil, and water soil resistance to water flow.…”

Section: Discussionmentioning

confidence: 99%

Root detection by resistivity imaging and physiological activity with the dead-end trench on three clones of cocoa (Theobroma cacao)

Nailil

Putra

2020

Biodiversitas

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Abstract. Maghfiroh CN, Putra ETS, Dewi HSES. 2020. Root detection by resistivity imaging and physiological activity with the dead-end trench on three clones of cocoa (Theobroma cacao). Biodiversitas 21: 2794-2803. Indonesia is one of the largest cocoa production countries in Southeast Asia, but has low average productivity (982 kg/ha) based on Indonesian Plantation Statistics (2017). Productivity increase effort by giving dead-end trenches that applied to collect organic material, accommodate surface runoff sediments, prevent erosion, and maintain nutrient availability. Dead-end trench had an impact on root cutting and improve rooting. Clone is very influential on cocoa (Theobroma cacao L.) yield. The superior clones recommended are clones RCC-70, RCC-71, and KKM-22, which have high productivity and are resistant to pests and diseases. The objectives of this research were (i) to detect the presence of roots by resistivity imaging (ii) to study the effects of dead-end trench application on physiological activities of cocoa leaves and yields of three clones (RCC-70, RCC-71, and KKM-22); (iii) to determine which cocoa clone (s) performed a significant yield increase with the application of dead-end trench. Research was conducted in August 2018-April 2019 at PT. Pagilaran cocoa plantation in North Segayung Production Unit, subdistrict Tulis, Batang, Central Java. The experiment was arranged in a randomized complete design with two factors and three blocks as replications. The first factor was dead-end trench application (with or without dead-end trench application) and the second factor was cocoa clones (RCC-70, RCC-71, and KKM-22). This study showed that dead-end trench applications affected plant roots based on the interpretation results of geoelectric-resistivity measurements. Dead-end trench application significantly affected chlorophyll a, stomatal conductance, transpiration, and H2O leaf content. Dead-end trench application has no significant effect on the content of chlorophyll b, total chlorophyll content, nitrate reductase activity, stomatal density, CO2 leaf content, and photosynthesis rate.

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“…Pengamatan preparat stomata dilakukan menggunakan perbesaran 400x dengan luas bidang pandang 0.025 mm 2 . Pada saat pengamatan dalam bidang pandang, dihitung jumlah stomata dengan morfologi normal terbuka, normal tertutup dan abnormal pada 2 jenis sampel dari tiap lokasi untuk menghitung densitas stomata.Penghitungan densitas stomata dilakukan pada tiap kondisi morfologi stomata menggunakan rumus (Lestari, 2006) :…”

Section: Cara Kerjaunclassified